55157955099 has 32 divisors (see below), whose sum is σ = 79433303040. Its totient is φ = 33844048128.

The previous prime is 55157955071. The next prime is 55157955113. The reversal of 55157955099 is 99055975155.

It is a de Polignac number, because none of the positive numbers 2^k-55157955099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55157955499) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27674847 + ... + 27676839.

It is an arithmetic number, because the mean of its divisors is an integer number (2482290720).

Almost surely, 2^55157955099 is an apocalyptic number.

55157955099 is a deficient number, since it is larger than the sum of its proper divisors (24275347941).

55157955099 is a wasteful number, since it uses less digits than its factorization.

55157955099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3731.

The product of its (nonzero) digits is 15946875, while the sum is 60.

The spelling of 55157955099 in words is "fifty-five billion, one hundred fifty-seven million, nine hundred fifty-five thousand, ninety-nine".