56117057 has 4 divisors (see below), whose sum is σ = 56181636. Its totient is φ = 56052480.

The previous prime is 56117053. The next prime is 56117063. The reversal of 56117057 is 75071165.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5550736 + 50566321 = 2356^2 + 7111^2 .

It is a cyclic number.

It is not a de Polignac number, because 56117057 - 2² = 56117053 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56117053) 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 3 ways as a sum of consecutive naturals, for example, 30968 + ... + 32729.

It is an arithmetic number, because the mean of its divisors is an integer number (14045409).

Almost surely, 2^56117057 is an apocalyptic number.

It is an amenable number.

56117057 is a deficient number, since it is larger than the sum of its proper divisors (64579).

56117057 is an equidigital number, since it uses as much as digits as its factorization.

56117057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64578.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 56117057 is about 7491.1318904422. The cubic root of 56117057 is about 382.8526248220.

The spelling of 56117057 in words is "fifty-six million, one hundred seventeen thousand, fifty-seven".