56520530 has 32 divisors (see below), whose sum is σ = 112656960. Its totient is φ = 20243520.

The previous prime is 56520521. The next prime is 56520539. The reversal of 56520530 is 3502565.

It is an interprime number because it is at equal distance from previous prime (56520521) and next prime (56520539).

It is a super-2 number, since 2×56520530² = 6389140622961800, 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 56520530.

It is not an unprimeable number, because it can be changed into a prime (56520539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3536 + ... + 11204.

It is an arithmetic number, because the mean of its divisors is an integer number (3520530).

Almost surely, 2^56520530 is an apocalyptic number.

56520530 is a deficient number, since it is larger than the sum of its proper divisors (56136430).

56520530 is a wasteful number, since it uses less digits than its factorization.

56520530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7754.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 56520530 is about 7518.0137004398. The cubic root of 56520530 is about 383.7679850243.

The spelling of 56520530 in words is "fifty-six million, five hundred twenty thousand, five hundred thirty".