51170516055 has 24 divisors (see below), whose sum is σ = 90369066528. Its totient is φ = 26776017216.

The previous prime is 51170516053. The next prime is 51170516063. The reversal of 51170516055 is 55061507115.

It is a happy number.

It is not a de Polignac number, because 51170516055 - 2¹ = 51170516053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51170516053) 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, 10725187 + ... + 10729956.

It is an arithmetic number, because the mean of its divisors is an integer number (3765377772).

Almost surely, 2^51170516055 is an apocalyptic number.

51170516055 is a deficient number, since it is larger than the sum of its proper divisors (39198550473).

51170516055 is a wasteful number, since it uses less digits than its factorization.

51170516055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21455207 (or 21455204 counting only the distinct ones).

The product of its (nonzero) digits is 26250, while the sum is 36.

The spelling of 51170516055 in words is "fifty-one billion, one hundred seventy million, five hundred sixteen thousand, fifty-five".