56057161 has 4 divisors (see below), whose sum is σ = 56170000. Its totient is φ = 55944324.

The previous prime is 56057159. The next prime is 56057191. The reversal of 56057161 is 16175065.

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 a cyclic number.

It is not a de Polignac number, because 56057161 - 2¹ = 56057159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56057101) 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, 55671 + ... + 56668.

It is an arithmetic number, because the mean of its divisors is an integer number (14042500).

Almost surely, 2^56057161 is an apocalyptic number.

It is an amenable number.

56057161 is a deficient number, since it is larger than the sum of its proper divisors (112839).

56057161 is a wasteful number, since it uses less digits than its factorization.

56057161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112838.

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 56057161 is about 7487.1330294045. The cubic root of 56057161 is about 382.7163649788.

The spelling of 56057161 in words is "fifty-six million, fifty-seven thousand, one hundred sixty-one".