521372832 has 48 divisors (see below), whose sum is σ = 1428114240. Its totient is φ = 166234112.

The previous prime is 521372827. The next prime is 521372837. The reversal of 521372832 is 238273125.

It is an interprime number because it is at equal distance from previous prime (521372827) and next prime (521372837).

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 521372793 and 521372802.

It is not an unprimeable number, because it can be changed into a prime (521372837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115857 + ... + 120272.

It is an arithmetic number, because the mean of its divisors is an integer number (29752380).

Almost surely, 2^521372832 is an apocalyptic number.

It is an amenable number.

521372832 is an abundant number, since it is smaller than the sum of its proper divisors (906741408).

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

521372832 is a wasteful number, since it uses less digits than its factorization.

521372832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236165 (or 236157 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 521372832 is about 22833.5899936913. The cubic root of 521372832 is about 804.8521940994.

The spelling of 521372832 in words is "five hundred twenty-one million, three hundred seventy-two thousand, eight hundred thirty-two".