56776307 has 4 divisors (see below), whose sum is σ = 64887216. Its totient is φ = 48665400.

The previous prime is 56776271. The next prime is 56776333. The reversal of 56776307 is 70367765.

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

It is not a de Polignac number, because 56776307 - 2²⁰ = 55727731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56776337) 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, 4055444 + ... + 4055457.

It is an arithmetic number, because the mean of its divisors is an integer number (16221804).

Almost surely, 2^56776307 is an apocalyptic number.

56776307 is a deficient number, since it is larger than the sum of its proper divisors (8110909).

56776307 is an equidigital number, since it uses as much as digits as its factorization.

56776307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110908.

The product of its (nonzero) digits is 185220, while the sum is 41.

The square root of 56776307 is about 7535.0054412721. The cubic root of 56776307 is about 384.3460129021.

The spelling of 56776307 in words is "fifty-six million, seven hundred seventy-six thousand, three hundred seven".