56377961 has 4 divisors (see below), whose sum is σ = 56895300. Its totient is φ = 55860624.

The previous prime is 56377939. The next prime is 56377963. The reversal of 56377961 is 16977365.

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 13278736 + 43099225 = 3644^2 + 6565^2 .

It is a cyclic number.

It is not a de Polignac number, because 56377961 - 2¹⁴ = 56361577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56377963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258506 + ... + 258723.

It is an arithmetic number, because the mean of its divisors is an integer number (14223825).

Almost surely, 2^56377961 is an apocalyptic number.

It is an amenable number.

56377961 is a deficient number, since it is larger than the sum of its proper divisors (517339).

56377961 is a wasteful number, since it uses less digits than its factorization.

56377961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517338.

The product of its digits is 238140, while the sum is 44.

The square root of 56377961 is about 7508.5258872831. The cubic root of 56377961 is about 383.4450375573.

The spelling of 56377961 in words is "fifty-six million, three hundred seventy-seven thousand, nine hundred sixty-one".