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525252 = 223713237
BaseRepresentation
bin10000000001111000100
3222200111210
42000033010
5113302002
615131420
74315230
oct2001704
9880453
10525252
113296a2
12213b70
13155100
14d95c0
15a596c
hex803c4

525252 has 72 divisors (see below), whose sum is σ = 1557696. Its totient is φ = 134784.

The previous prime is 525247. The next prime is 525253. The reversal of 525252 is 252525.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between odd and even.

525252 is an undulating number in base 10.

525252 is a modest number, since divided by 5252 gives 52 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525253) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14178 + ... + 14214.

2525252 is an apocalyptic number.

525252 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 525252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (778848).

525252 is an abundant number, since it is smaller than the sum of its proper divisors (1032444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

525252 is a wasteful number, since it uses less digits than its factorization.

525252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 62 counting only the distinct ones).

The product of its digits is 1000, while the sum is 21.

The square root of 525252 is about 724.7427129679. The cubic root of 525252 is about 80.6843376658.

Adding to 525252 its reverse (252525), we get a palindrome (777777).

It can be divided in two parts, 525 and 252, that added together give a palindrome (777).

The spelling of 525252 in words is "five hundred twenty-five thousand, two hundred fifty-two".

Divisors: 1 2 3 4 6 7 12 13 14 21 26 28 37 39 42 52 74 78 84 91 111 148 156 169 182 222 259 273 338 364 444 481 507 518 546 676 777 962 1014 1036 1092 1183 1443 1554 1924 2028 2366 2886 3108 3367 3549 4732 5772 6253 6734 7098 10101 12506 13468 14196 18759 20202 25012 37518 40404 43771 75036 87542 131313 175084 262626 525252