55100505555 has 40 divisors (see below), whose sum is σ = 99037835952. Its totient is φ = 29308070592.

The previous prime is 55100505547. The next prime is 55100505563. The reversal of 55100505555 is 55550500155.

It is a happy number.

55100505555 is a `hidden beast` number, since 5 + 51 + 0 + 0 + 50 + 5 + 555 = 666.

It is an interprime number because it is at equal distance from previous prime (55100505547) and next prime (55100505563).

It is not a de Polignac number, because 55100505555 - 2³ = 55100505547 is a prime.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 31309 + ... + 333438.

Almost surely, 2^55100505555 is an apocalyptic number.

55100505555 is a deficient number, since it is larger than the sum of its proper divisors (43937330397).

55100505555 is a wasteful number, since it uses less digits than its factorization.

55100505555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365137 (or 365128 counting only the distinct ones).

The product of its (nonzero) digits is 78125, while the sum is 36.

The spelling of 55100505555 in words is "fifty-five billion, one hundred million, five hundred five thousand, five hundred fifty-five".