56751577 has 8 divisors (see below), whose sum is σ = 57235464. Its totient is φ = 56270208.

The previous prime is 56751551. The next prime is 56751619. The reversal of 56751577 is 77515765.

It can be written as a sum of positive squares in 4 ways, for example, as 741321 + 56010256 = 861^2 + 7484^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 56751577 - 2⁷ = 56751449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56751517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86583 + ... + 87235.

It is an arithmetic number, because the mean of its divisors is an integer number (7154433).

Almost surely, 2^56751577 is an apocalyptic number.

It is an amenable number.

56751577 is a deficient number, since it is larger than the sum of its proper divisors (483887).

56751577 is a wasteful number, since it uses less digits than its factorization.

56751577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259.

The product of its digits is 257250, while the sum is 43.

The square root of 56751577 is about 7533.3642550988. The cubic root of 56751577 is about 384.2902017269.

The spelling of 56751577 in words is "fifty-six million, seven hundred fifty-one thousand, five hundred seventy-seven".