521607052 has 12 divisors (see below), whose sum is σ = 913060120. Its totient is φ = 260732736.

The previous prime is 521607013. The next prime is 521607061. The reversal of 521607052 is 250706125.

It is a super-2 number, since 2×521607052² = 544147833392261408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 521607052.

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, 1099 + ... + 32317.

Almost surely, 2^521607052 is an apocalyptic number.

It is an amenable number.

521607052 is a deficient number, since it is larger than the sum of its proper divisors (391453068).

521607052 is a wasteful number, since it uses less digits than its factorization.

521607052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35400 (or 35398 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 521607052 is about 22838.7182652617. The cubic root of 521607052 is about 804.9726992014.

The spelling of 521607052 in words is "five hundred twenty-one million, six hundred seven thousand, fifty-two".