521799480 has 48 divisors (see below), whose sum is σ = 1695849480. Its totient is φ = 139146432.

The previous prime is 521799461. The next prime is 521799491. The reversal of 521799480 is 84997125.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 724362 + ... + 725081.

Almost surely, 2^521799480 is an apocalyptic number.

It is an amenable number.

521799480 is an abundant number, since it is smaller than the sum of its proper divisors (1174050000).

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

521799480 is a wasteful number, since it uses less digits than its factorization.

521799480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449460 (or 1449453 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 521799480 is about 22842.9306351002. The cubic root of 521799480 is about 805.0716755232.

The spelling of 521799480 in words is "five hundred twenty-one million, seven hundred ninety-nine thousand, four hundred eighty".