56877865 has 24 divisors (see below), whose sum is σ = 76885704. Its totient is φ = 40339200.

The previous prime is 56877859. The next prime is 56877871.

56877865 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (56877859) and next prime (56877871).

It can be written as a sum of positive squares in 4 ways, for example, as 267289 + 56610576 = 517^2 + 7524^2 .

It is not a de Polignac number, because 56877865 - 2⁵ = 56877833 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23659 + ... + 25951.

It is an arithmetic number, because the mean of its divisors is an integer number (3203571).

Almost surely, 2^56877865 is an apocalyptic number.

56877865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56877865 is a deficient number, since it is larger than the sum of its proper divisors (20007839).

56877865 is a wasteful number, since it uses less digits than its factorization.

56877865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361 (or 2350 counting only the distinct ones).

The product of its digits is 2822400, while the sum is 52.

The square root of 56877865 is about 7541.7415097575. The cubic root of 56877865 is about 384.5750413120.

The spelling of 56877865 in words is "fifty-six million, eight hundred seventy-seven thousand, eight hundred sixty-five".