55030155 has 16 divisors (see below), whose sum is σ = 88279584. Its totient is φ = 29272320.

The previous prime is 55030051. The next prime is 55030163. The reversal of 55030155 is 55103055.

It is not a de Polignac number, because 55030155 - 2¹¹ = 55028107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1335 + ... + 10575.

It is an arithmetic number, because the mean of its divisors is an integer number (5517474).

Almost surely, 2^55030155 is an apocalyptic number.

55030155 is a deficient number, since it is larger than the sum of its proper divisors (33249429).

55030155 is a wasteful number, since it uses less digits than its factorization.

55030155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9646.

The product of its (nonzero) digits is 1875, while the sum is 24.

The square root of 55030155 is about 7418.2312581909. The cubic root of 55030155 is about 380.3647352153.

Subtracting 55030155 from its reverse (55103055), we obtain a square (72900 = 270²).

The spelling of 55030155 in words is "fifty-five million, thirty thousand, one hundred fifty-five".