521452616 has 16 divisors (see below), whose sum is σ = 978018300. Its totient is φ = 260647744.

The previous prime is 521452601. The next prime is 521452627. The reversal of 521452616 is 616254125.

It can be written as a sum of positive squares in 2 ways, for example, as 370408516 + 151044100 = 19246^2 + 12290^2 .

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, 26126 + ... + 41538.

Almost surely, 2^521452616 is an apocalyptic number.

It is an amenable number.

521452616 is a deficient number, since it is larger than the sum of its proper divisors (456565684).

521452616 is a wasteful number, since it uses less digits than its factorization.

521452616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19648 (or 19644 counting only the distinct ones).

The product of its digits is 14400, while the sum is 32.

The square root of 521452616 is about 22835.3370021114. The cubic root of 521452616 is about 804.8932466490.

The spelling of 521452616 in words is "five hundred twenty-one million, four hundred fifty-two thousand, six hundred sixteen".