55565172051 has 8 divisors (see below), whose sum is σ = 74088156624. Its totient is φ = 37042817760.

The previous prime is 55565172037. The next prime is 55565172073. The reversal of 55565172051 is 15027156555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55565172051 - 2³⁴ = 38385302867 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55565171994 and 55565172012.

It is not an unprimeable number, because it can be changed into a prime (55565172031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115981 + ... + 352961.

It is an arithmetic number, because the mean of its divisors is an integer number (9261019578).

Almost surely, 2^55565172051 is an apocalyptic number.

55565172051 is a deficient number, since it is larger than the sum of its proper divisors (18522984573).

55565172051 is a wasteful number, since it uses less digits than its factorization.

55565172051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315141.

The product of its (nonzero) digits is 262500, while the sum is 42.

The spelling of 55565172051 in words is "fifty-five billion, five hundred sixty-five million, one hundred seventy-two thousand, fifty-one".