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52511988 = 22314393041
BaseRepresentation
bin1100100001010…
…0010011110100
310122210212220110
43020110103310
5101420340423
65113303020
71205226114
oct310242364
9118725813
1052511988
1127707041
1215704a70
13ab578a9
146d8d044
154924193
hex32144f4

52511988 has 24 divisors (see below), whose sum is σ = 122653440. Its totient is φ = 17486080.

The previous prime is 52511971. The next prime is 52511989. The reversal of 52511988 is 88911525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52511989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15748 + ... + 18788.

It is an arithmetic number, because the mean of its divisors is an integer number (5110560).

Almost surely, 252511988 is an apocalyptic number.

It is an amenable number.

52511988 is an abundant number, since it is smaller than the sum of its proper divisors (70141452).

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

52511988 is a wasteful number, since it uses less digits than its factorization.

52511988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4487 (or 4485 counting only the distinct ones).

The product of its digits is 28800, while the sum is 39.

The square root of 52511988 is about 7246.5155764685. The cubic root of 52511988 is about 374.4721177005.

The spelling of 52511988 in words is "fifty-two million, five hundred eleven thousand, nine hundred eighty-eight".

Divisors: 1 2 3 4 6 12 1439 2878 3041 4317 5756 6082 8634 9123 12164 17268 18246 36492 4375999 8751998 13127997 17503996 26255994 52511988