55111100506 has 16 divisors (see below), whose sum is σ = 103064915520. Its totient is φ = 21471857280.

The previous prime is 55111100479. The next prime is 55111100537. The reversal of 55111100506 is 60500111155.

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, 178931991 + ... + 178932298.

It is an arithmetic number, because the mean of its divisors is an integer number (6441557220).

Almost surely, 2^55111100506 is an apocalyptic number.

55111100506 is a deficient number, since it is larger than the sum of its proper divisors (47953815014).

55111100506 is a wasteful number, since it uses less digits than its factorization.

55111100506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357864309.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 55111100506 in words is "fifty-five billion, one hundred eleven million, one hundred thousand, five hundred six".