55522307691 has 6 divisors (see below), whose sum is σ = 80198888900. Its totient is φ = 37014871788.

The previous prime is 55522307677. The next prime is 55522307713. The reversal of 55522307691 is 19670322555.

55522307691 is a `hidden beast` number, since 5 + 5 + 522 + 30 + 7 + 6 + 91 = 666.

It is not a de Polignac number, because 55522307691 - 2⁶ = 55522307627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55522307591) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3084572641 + ... + 3084572658.

Almost surely, 2^55522307691 is an apocalyptic number.

55522307691 is a deficient number, since it is larger than the sum of its proper divisors (24676581209).

55522307691 is a wasteful number, since it uses less digits than its factorization.

55522307691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6169145305 (or 6169145302 counting only the distinct ones).

The product of its (nonzero) digits is 567000, while the sum is 45.

The spelling of 55522307691 in words is "fifty-five billion, five hundred twenty-two million, three hundred seven thousand, six hundred ninety-one".