56581970 has 16 divisors (see below), whose sum is σ = 101933208. Its totient is φ = 22613760.

The previous prime is 56581961. The next prime is 56581999. The reversal of 56581970 is 7918565.

It can be written as a sum of positive squares in 4 ways, for example, as 56265001 + 316969 = 7501^2 + 563^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22202 + ... + 24618.

Almost surely, 2^56581970 is an apocalyptic number.

56581970 is a deficient number, since it is larger than the sum of its proper divisors (45351238).

56581970 is a wasteful number, since it uses less digits than its factorization.

56581970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 56581970 is about 7522.0987762725. The cubic root of 56581970 is about 383.9069915440.

The spelling of 56581970 in words is "fifty-six million, five hundred eighty-one thousand, nine hundred seventy".