521972260 has 24 divisors (see below), whose sum is σ = 1100700216. Its totient is φ = 207920640.

The previous prime is 521972257. The next prime is 521972293. The reversal of 521972260 is 62279125.

It can be written as a sum of positive squares in 4 ways, for example, as 5410276 + 516561984 = 2326^2 + 22728^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49327 + ... + 58966.

It is an arithmetic number, because the mean of its divisors is an integer number (45862509).

Almost surely, 2^521972260 is an apocalyptic number.

It is an amenable number.

521972260 is an abundant number, since it is smaller than the sum of its proper divisors (578727956).

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

521972260 is a wasteful number, since it uses less digits than its factorization.

521972260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108543 (or 108541 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 521972260 is about 22846.7122361184. The cubic root of 521972260 is about 805.1605250648.

The spelling of 521972260 in words is "five hundred twenty-one million, nine hundred seventy-two thousand, two hundred sixty".