56131165 has 4 divisors (see below), whose sum is σ = 67357404. Its totient is φ = 44904928.

The previous prime is 56131147. The next prime is 56131171. The reversal of 56131165 is 56113165.

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 23561316 + 32569849 = 4854^2 + 5707^2 .

It is a cyclic number.

It is not a de Polignac number, because 56131165 - 2¹⁷ = 56000093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5613112 + ... + 5613121.

It is an arithmetic number, because the mean of its divisors is an integer number (16839351).

Almost surely, 2^56131165 is an apocalyptic number.

It is an amenable number.

56131165 is a deficient number, since it is larger than the sum of its proper divisors (11226239).

56131165 is a wasteful number, since it uses less digits than its factorization.

56131165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11226238.

The product of its digits is 2700, while the sum is 28.

The square root of 56131165 is about 7492.0734780166. The cubic root of 56131165 is about 382.8847055746.

The spelling of 56131165 in words is "fifty-six million, one hundred thirty-one thousand, one hundred sixty-five".