525513216 has 40 divisors (see below), whose sum is σ = 1400004144. Its totient is φ = 175170560.

The previous prime is 525513193. The next prime is 525513281. The reversal of 525513216 is 612315525.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169530 + ... + 172601.

Almost surely, 2^525513216 is an apocalyptic number.

It is an amenable number.

525513216 is an abundant number, since it is smaller than the sum of its proper divisors (874490928).

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

525513216 is an equidigital number, since it uses as much as digits as its factorization.

525513216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342152 (or 342136 counting only the distinct ones).

The product of its digits is 9000, while the sum is 30.

The square root of 525513216 is about 22924.0750304129. The cubic root of 525513216 is about 806.9771064171.

The spelling of 525513216 in words is "five hundred twenty-five million, five hundred thirteen thousand, two hundred sixteen".