55001011155 has 64 divisors (see below), whose sum is σ = 91679551488. Its totient is φ = 28132323840.

The previous prime is 55001011127. The next prime is 55001011187. The reversal of 55001011155 is 55111010055.

It is not a de Polignac number, because 55001011155 - 2⁵ = 55001011123 is a prime.

It is a super-2 number, since 2×55001011155² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24920062 + ... + 24922268.

It is an arithmetic number, because the mean of its divisors is an integer number (1432492992).

Almost surely, 2^55001011155 is an apocalyptic number.

55001011155 is a deficient number, since it is larger than the sum of its proper divisors (36678540333).

55001011155 is a wasteful number, since it uses less digits than its factorization.

55001011155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876.

The product of its (nonzero) digits is 625, while the sum is 24.

It can be divided in two parts, 550010 and 11155, that added together give a palindrome (561165).

The spelling of 55001011155 in words is "fifty-five billion, one million, eleven thousand, one hundred fifty-five".