56751161 has 2 divisors, whose sum is σ = 56751162. Its totient is φ = 56751160.

The previous prime is 56751133. The next prime is 56751179. The reversal of 56751161 is 16115765.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31147561 + 25603600 = 5581^2 + 5060^2 .

It is a cyclic number.

It is not a de Polignac number, because 56751161 - 2¹⁰ = 56750137 is a prime.

It is not a weakly prime, because it can be changed into another prime (56751131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28375580 + 28375581.

It is an arithmetic number, because the mean of its divisors is an integer number (28375581).

Almost surely, 2^56751161 is an apocalyptic number.

It is an amenable number.

56751161 is a deficient number, since it is larger than the sum of its proper divisors (1).

56751161 is an equidigital number, since it uses as much as digits as its factorization.

56751161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 32.

The square root of 56751161 is about 7533.3366445420. The cubic root of 56751161 is about 384.2892627509.

The spelling of 56751161 in words is "fifty-six million, seven hundred fifty-one thousand, one hundred sixty-one".