55204251651 has 20 divisors (see below), whose sum is σ = 86805908200. Its totient is φ = 34865842176.

The previous prime is 55204251647. The next prime is 55204251653. The reversal of 55204251651 is 15615240255.

55204251651 is a `hidden beast` number, since 5 + 52 + 0 + 42 + 516 + 51 = 666.

It is not a de Polignac number, because 55204251651 - 2² = 55204251647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55204251653) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17933566 + ... + 17936643.

It is an arithmetic number, because the mean of its divisors is an integer number (4340295410).

Almost surely, 2^55204251651 is an apocalyptic number.

55204251651 is a deficient number, since it is larger than the sum of its proper divisors (31601656549).

55204251651 is a wasteful number, since it uses less digits than its factorization.

55204251651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35870240 (or 35870231 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 55204251651 in words is "fifty-five billion, two hundred four million, two hundred fifty-one thousand, six hundred fifty-one".