51055005051 has 16 divisors (see below), whose sum is σ = 79617942400. Its totient is φ = 32245266024.

The previous prime is 51055005019. The next prime is 51055005059. The reversal of 51055005051 is 15050055015.

51055005051 is a `hidden beast` number, since 5 + 10 + 550 + 0 + 50 + 51 = 666.

It is not a de Polignac number, because 51055005051 - 2⁵ = 51055005019 is a prime.

It is a super-2 number, since 2×51055005051² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51055005059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49760701 + ... + 49761726.

It is an arithmetic number, because the mean of its divisors is an integer number (4976121400).

Almost surely, 2^51055005051 is an apocalyptic number.

51055005051 is a deficient number, since it is larger than the sum of its proper divisors (28562937349).

51055005051 is a wasteful number, since it uses less digits than its factorization.

51055005051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99522455 (or 99522449 counting only the distinct ones).

The product of its (nonzero) digits is 3125, while the sum is 27.

The spelling of 51055005051 in words is "fifty-one billion, fifty-five million, five thousand, fifty-one".