55506155511 has 16 divisors (see below), whose sum is σ = 75851774208. Its totient is φ = 36083236800.

The previous prime is 55506155503. The next prime is 55506155513. The reversal of 55506155511 is 11555160555.

It is not a de Polignac number, because 55506155511 - 2³ = 55506155503 is a prime.

It is a super-2 number, since 2×55506155511² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55506155511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55506155513) 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, 130846 + ... + 357956.

It is an arithmetic number, because the mean of its divisors is an integer number (4740735888).

Almost surely, 2^55506155511 is an apocalyptic number.

55506155511 is a deficient number, since it is larger than the sum of its proper divisors (20345618697).

55506155511 is a wasteful number, since it uses less digits than its factorization.

55506155511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229142.

The product of its (nonzero) digits is 93750, while the sum is 39.

The spelling of 55506155511 in words is "fifty-five billion, five hundred six million, one hundred fifty-five thousand, five hundred eleven".