55157071155 has 64 divisors (see below), whose sum is σ = 95170352640. Its totient is φ = 27188130816.

The previous prime is 55157071093. The next prime is 55157071171. The reversal of 55157071155 is 55117075155.

It is a happy number.

It is not a de Polignac number, because 55157071155 - 2¹⁰ = 55157070131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12657237 + ... + 12661593.

It is an arithmetic number, because the mean of its divisors is an integer number (1487036760).

Almost surely, 2^55157071155 is an apocalyptic number.

55157071155 is a deficient number, since it is larger than the sum of its proper divisors (40013281485).

55157071155 is a wasteful number, since it uses less digits than its factorization.

55157071155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5460.

The product of its (nonzero) digits is 153125, while the sum is 42.

The spelling of 55157071155 in words is "fifty-five billion, one hundred fifty-seven million, seventy-one thousand, one hundred fifty-five".