56521130 has 8 divisors (see below), whose sum is σ = 101738052. Its totient is φ = 22608448.

The previous prime is 56521123. The next prime is 56521151. The reversal of 56521130 is 3112565.

It can be written as a sum of positive squares in 2 ways, for example, as 54213769 + 2307361 = 7363^2 + 1519^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 56521096 and 56521105.

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, 2826047 + ... + 2826066.

Almost surely, 2^56521130 is an apocalyptic number.

56521130 is a deficient number, since it is larger than the sum of its proper divisors (45216922).

56521130 is a wasteful number, since it uses less digits than its factorization.

56521130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652120.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 56521130 is about 7518.0536044910. The cubic root of 56521130 is about 383.7693429968.

Adding to 56521130 its reverse (3112565), we get a palindrome (59633695).

The spelling of 56521130 in words is "fifty-six million, five hundred twenty-one thousand, one hundred thirty".