520897272 has 64 divisors (see below), whose sum is σ = 1575832320. Its totient is φ = 140072448.

The previous prime is 520897271. The next prime is 520897277. The reversal of 520897272 is 272798025.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520897271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88338 + ... + 94049.

It is an arithmetic number, because the mean of its divisors is an integer number (24622380).

Almost surely, 2^520897272 is an apocalyptic number.

It is an amenable number.

520897272 is an abundant number, since it is smaller than the sum of its proper divisors (1054935048).

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

520897272 is a wasteful number, since it uses less digits than its factorization.

520897272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182420 (or 182416 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 520897272 is about 22823.1740123936. The cubic root of 520897272 is about 804.6074096129.

The spelling of 520897272 in words is "five hundred twenty million, eight hundred ninety-seven thousand, two hundred seventy-two".