55400875558 has 16 divisors (see below), whose sum is σ = 98036573184. Its totient is φ = 22977321480.

The previous prime is 55400875549. The next prime is 55400875577. The reversal of 55400875558 is 85557800455.

It is a super-3 number, since 3×55400875558³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63825460 + ... + 63826327.

It is an arithmetic number, because the mean of its divisors is an integer number (6127285824).

Almost surely, 2^55400875558 is an apocalyptic number.

55400875558 is a deficient number, since it is larger than the sum of its proper divisors (42635697626).

55400875558 is a wasteful number, since it uses less digits than its factorization.

55400875558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127651827.

The product of its (nonzero) digits is 5600000, while the sum is 52.

The spelling of 55400875558 in words is "fifty-five billion, four hundred million, eight hundred seventy-five thousand, five hundred fifty-eight".