55055000051 has 4 divisors (see below), whose sum is σ = 55359171504. Its totient is φ = 54750828600.

The previous prime is 55055000041. The next prime is 55055000071. The reversal of 55055000051 is 15000055055.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55055000051 is a prime.

It is a super-2 number, since 2×55055000051² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55055000041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152085455 + ... + 152085816.

It is an arithmetic number, because the mean of its divisors is an integer number (13839792876).

Almost surely, 2^55055000051 is an apocalyptic number.

55055000051 is a deficient number, since it is larger than the sum of its proper divisors (304171453).

55055000051 is a wasteful number, since it uses less digits than its factorization.

55055000051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304171452.

The product of its (nonzero) digits is 3125, while the sum is 26.

The spelling of 55055000051 in words is "fifty-five billion, fifty-five million, fifty-one", and thus it is an aban number and an uban number.