56920945 has 4 divisors (see below), whose sum is σ = 68305140. Its totient is φ = 45536752.

The previous prime is 56920937. The next prime is 56920967. The reversal of 56920945 is 54902965.

56920945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40347904 + 16573041 = 6352^2 + 4071^2 .

It is a cyclic number.

It is not a de Polignac number, because 56920945 - 2³ = 56920937 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 56920898 and 56920907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5692090 + ... + 5692099.

It is an arithmetic number, because the mean of its divisors is an integer number (17076285).

Almost surely, 2^56920945 is an apocalyptic number.

It is an amenable number.

56920945 is a deficient number, since it is larger than the sum of its proper divisors (11384195).

56920945 is a wasteful number, since it uses less digits than its factorization.

56920945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11384194.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 56920945 is about 7544.5970734029. The cubic root of 56920945 is about 384.6721107767.

The spelling of 56920945 in words is "fifty-six million, nine hundred twenty thousand, nine hundred forty-five".