Search a number
-
+
52131030 = 2357248243
BaseRepresentation
bin1100011011011…
…1010011010110
310122002112022220
43012313103112
5101321143110
65101203210
71202051340
oct306672326
9118075286
1052131030
11274768a6
1215560506
13aa53383
146cd0290
15489b370
hex31b74d6

52131030 has 32 divisors (see below), whose sum is σ = 142988544. Its totient is φ = 11915616.

The previous prime is 52131019. The next prime is 52131047. The reversal of 52131030 is 3013125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123912 + ... + 124331.

It is an arithmetic number, because the mean of its divisors is an integer number (4468392).

Almost surely, 252131030 is an apocalyptic number.

52131030 is an abundant number, since it is smaller than the sum of its proper divisors (90857514).

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

52131030 is a wasteful number, since it uses less digits than its factorization.

52131030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248260.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 52131030 is about 7220.1821306668. The cubic root of 52131030 is about 373.5643597348.

Adding to 52131030 its reverse (3013125), we get a palindrome (55144155).

The spelling of 52131030 in words is "fifty-two million, one hundred thirty-one thousand, thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 248243 496486 744729 1241215 1489458 1737701 2482430 3475402 3723645 5213103 7447290 8688505 10426206 17377010 26065515 52131030