56736777 has 4 divisors (see below), whose sum is σ = 75649040. Its totient is φ = 37824516.

The previous prime is 56736761. The next prime is 56736781. The reversal of 56736777 is 77763765.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56736777 - 2⁴ = 56736761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56736707) 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, 9456127 + ... + 9456132.

It is an arithmetic number, because the mean of its divisors is an integer number (18912260).

Almost surely, 2^56736777 is an apocalyptic number.

It is an amenable number.

56736777 is a deficient number, since it is larger than the sum of its proper divisors (18912263).

56736777 is a wasteful number, since it uses less digits than its factorization.

56736777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18912262.

The product of its digits is 1296540, while the sum is 48.

The square root of 56736777 is about 7532.3818941952. The cubic root of 56736777 is about 384.2567930255.

The spelling of 56736777 in words is "fifty-six million, seven hundred thirty-six thousand, seven hundred seventy-seven".