521493080 has 32 divisors (see below), whose sum is σ = 1213822800. Its totient is φ = 201403776.

The previous prime is 521493073. The next prime is 521493101. The reversal of 521493080 is 80394125.

It is a congruent number.

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, 223622 + ... + 225941.

Almost surely, 2^521493080 is an apocalyptic number.

It is an amenable number.

521493080 is an abundant number, since it is smaller than the sum of its proper divisors (692329720).

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

521493080 is a wasteful number, since it uses less digits than its factorization.

521493080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449603 (or 449599 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 521493080 is about 22836.2229801690. Note that the first 3 decimals coincide. The cubic root of 521493080 is about 804.9140656438.

The spelling of 521493080 in words is "five hundred twenty-one million, four hundred ninety-three thousand, eighty".