55050477291 has 24 divisors (see below), whose sum is σ = 79949454624. Its totient is φ = 36501413760.

The previous prime is 55050477263. The next prime is 55050477311. The reversal of 55050477291 is 19277405055.

55050477291 is a `hidden beast` number, since 5 + 50 + 504 + 7 + 7 + 2 + 91 = 666.

It is not a de Polignac number, because 55050477291 - 2⁹ = 55050476779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55050477211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1257625 + ... + 1300661.

It is an arithmetic number, because the mean of its divisors is an integer number (3331227276).

Almost surely, 2^55050477291 is an apocalyptic number.

55050477291 is a deficient number, since it is larger than the sum of its proper divisors (24898977333).

55050477291 is a wasteful number, since it uses less digits than its factorization.

55050477291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43811 (or 43808 counting only the distinct ones).

The product of its (nonzero) digits is 441000, while the sum is 45.

The spelling of 55050477291 in words is "fifty-five billion, fifty million, four hundred seventy-seven thousand, two hundred ninety-one".