55555051 has 6 divisors (see below), whose sum is σ = 58076060. Its totient is φ = 53139108.

The previous prime is 55555043. The next prime is 55555057. The reversal of 55555051 is 15055555.

It is not a de Polignac number, because 55555051 - 2³ = 55555043 is a prime.

It is a super-2 number, since 2×55555051² = 6172727383225202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55555057) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51981 + ... + 53038.

Almost surely, 2^55555051 is an apocalyptic number.

55555051 is a deficient number, since it is larger than the sum of its proper divisors (2521009).

55555051 is a wasteful number, since it uses less digits than its factorization.

55555051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105065 (or 105042 counting only the distinct ones).

The product of its (nonzero) digits is 15625, while the sum is 31.

The square root of 55555051 is about 7453.5260783068. The cubic root of 55555051 is about 381.5702590371.

The spelling of 55555051 in words is "fifty-five million, five hundred fifty-five thousand, fifty-one".