56011897 has 2 divisors, whose sum is σ = 56011898. Its totient is φ = 56011896.

The previous prime is 56011841. The next prime is 56011903. The reversal of 56011897 is 79811065.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34445161 + 21566736 = 5869^2 + 4644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56011897 is a prime.

It is not a weakly prime, because it can be changed into another prime (56011097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28005948 + 28005949.

It is an arithmetic number, because the mean of its divisors is an integer number (28005949).

Almost surely, 2^56011897 is an apocalyptic number.

It is an amenable number.

56011897 is a deficient number, since it is larger than the sum of its proper divisors (1).

56011897 is an equidigital number, since it uses as much as digits as its factorization.

56011897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 56011897 is about 7484.1096330826. The cubic root of 56011897 is about 382.6133276626.

The spelling of 56011897 in words is "fifty-six million, eleven thousand, eight hundred ninety-seven".