56955239291 has 2 divisors, whose sum is σ = 56955239292. Its totient is φ = 56955239290.

The previous prime is 56955239239. The next prime is 56955239303. The reversal of 56955239291 is 19293255965.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56955239291 - 2²² = 56951044987 is a prime.

It is not a weakly prime, because it can be changed into another prime (56955239191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28477619645 + 28477619646.

It is an arithmetic number, because the mean of its divisors is an integer number (28477619646).

Almost surely, 2^56955239291 is an apocalyptic number.

56955239291 is a deficient number, since it is larger than the sum of its proper divisors (1).

56955239291 is an equidigital number, since it uses as much as digits as its factorization.

56955239291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6561000, while the sum is 56.

The spelling of 56955239291 in words is "fifty-six billion, nine hundred fifty-five million, two hundred thirty-nine thousand, two hundred ninety-one".