56658911 has 2 divisors, whose sum is σ = 56658912. Its totient is φ = 56658910.

The previous prime is 56658883. The next prime is 56658929. The reversal of 56658911 is 11985665.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56658911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56618911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28329455 + 28329456.

It is an arithmetic number, because the mean of its divisors is an integer number (28329456).

Almost surely, 2^56658911 is an apocalyptic number.

56658911 is a deficient number, since it is larger than the sum of its proper divisors (1).

56658911 is an equidigital number, since it uses as much as digits as its factorization.

56658911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 41.

The square root of 56658911 is about 7527.2113694249. The cubic root of 56658911 is about 384.0809268637.

The spelling of 56658911 in words is "fifty-six million, six hundred fifty-eight thousand, nine hundred eleven".