56775747 has 8 divisors (see below), whose sum is σ = 86515456. Its totient is φ = 32443272.

The previous prime is 56775739. The next prime is 56775779. The reversal of 56775747 is 74757765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56775747 - 2³ = 56775739 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56775696 and 56775705.

It is not an unprimeable number, because it can be changed into a prime (56775727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351783 + ... + 1351824.

It is an arithmetic number, because the mean of its divisors is an integer number (10814432).

Almost surely, 2^56775747 is an apocalyptic number.

56775747 is a deficient number, since it is larger than the sum of its proper divisors (29739709).

56775747 is a wasteful number, since it uses less digits than its factorization.

56775747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703617.

The product of its digits is 1440600, while the sum is 48.

The square root of 56775747 is about 7534.9682812869. The cubic root of 56775747 is about 384.3447492618.

The spelling of 56775747 in words is "fifty-six million, seven hundred seventy-five thousand, seven hundred forty-seven".