55009155 has 16 divisors (see below), whose sum is σ = 88348320. Its totient is φ = 29227008.

The previous prime is 55009133. The next prime is 55009193. The reversal of 55009155 is 55190055.

It is not a de Polignac number, because 55009155 - 2⁶ = 55009091 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, 2782 + ... + 10851.

It is an arithmetic number, because the mean of its divisors is an integer number (5521770).

Almost surely, 2^55009155 is an apocalyptic number.

55009155 is a deficient number, since it is larger than the sum of its proper divisors (33339165).

55009155 is a wasteful number, since it uses less digits than its factorization.

55009155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13910.

The product of its (nonzero) digits is 5625, while the sum is 30.

The square root of 55009155 is about 7416.8156913867. The cubic root of 55009155 is about 380.3163455296.

The spelling of 55009155 in words is "fifty-five million, nine thousand, one hundred fifty-five".