55377365291 has 2 divisors, whose sum is σ = 55377365292. Its totient is φ = 55377365290.

The previous prime is 55377365257. The next prime is 55377365311. The reversal of 55377365291 is 19256377355.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55377365291 is a prime.

It is not a weakly prime, because it can be changed into another prime (55377365891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27688682645 + 27688682646.

It is an arithmetic number, because the mean of its divisors is an integer number (27688682646).

Almost surely, 2^55377365291 is an apocalyptic number.

55377365291 is a deficient number, since it is larger than the sum of its proper divisors (1).

55377365291 is an equidigital number, since it uses as much as digits as its factorization.

55377365291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5953500, while the sum is 53.

The spelling of 55377365291 in words is "fifty-five billion, three hundred seventy-seven million, three hundred sixty-five thousand, two hundred ninety-one".