561471520 has 48 divisors (see below), whose sum is σ = 1328419008. Its totient is φ = 224259840.

The previous prime is 561471509. The next prime is 561471539. The reversal of 561471520 is 25174165.

It is a super-2 number, since 2×561471520² = 630500535542220800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127597 + ... + 131923.

It is an arithmetic number, because the mean of its divisors is an integer number (27675396).

Almost surely, 2^561471520 is an apocalyptic number.

It is an amenable number.

561471520 is an abundant number, since it is smaller than the sum of its proper divisors (766947488).

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

561471520 is a wasteful number, since it uses less digits than its factorization.

561471520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153 (or 5145 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 561471520 is about 23695.3902689954. The cubic root of 561471520 is about 824.9783991896.

The spelling of 561471520 in words is "five hundred sixty-one million, four hundred seventy-one thousand, five hundred twenty".