55957715291 has 2 divisors, whose sum is σ = 55957715292. Its totient is φ = 55957715290.

The previous prime is 55957715273. The next prime is 55957715299. The reversal of 55957715291 is 19251775955.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55957715291 is a prime.

It is not a weakly prime, because it can be changed into another prime (55957715299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27978857645 + 27978857646.

It is an arithmetic number, because the mean of its divisors is an integer number (27978857646).

Almost surely, 2^55957715291 is an apocalyptic number.

55957715291 is a deficient number, since it is larger than the sum of its proper divisors (1).

55957715291 is an equidigital number, since it uses as much as digits as its factorization.

55957715291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4961250, while the sum is 56.

The spelling of 55957715291 in words is "fifty-five billion, nine hundred fifty-seven million, seven hundred fifteen thousand, two hundred ninety-one".