56118901 has 2 divisors, whose sum is σ = 56118902. Its totient is φ = 56118900.

The previous prime is 56118883. The next prime is 56118917. The reversal of 56118901 is 10981165.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43903876 + 12215025 = 6626^2 + 3495^2 .

It is a cyclic number.

It is not a de Polignac number, because 56118901 - 2⁹ = 56118389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51118901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28059450 + 28059451.

It is an arithmetic number, because the mean of its divisors is an integer number (28059451).

Almost surely, 2^56118901 is an apocalyptic number.

It is an amenable number.

56118901 is a deficient number, since it is larger than the sum of its proper divisors (1).

56118901 is an equidigital number, since it uses as much as digits as its factorization.

56118901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 56118901 is about 7491.2549682947. The cubic root of 56118901 is about 382.8568182738.

The spelling of 56118901 in words is "fifty-six million, one hundred eighteen thousand, nine hundred one".