55165159 has 4 divisors (see below), whose sum is σ = 63045904. Its totient is φ = 47284416.

The previous prime is 55165139. The next prime is 55165183. The reversal of 55165159 is 95156155.

It is a happy number.

55165159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55165159 - 2⁵ = 55165127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55165139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3940362 + ... + 3940375.

It is an arithmetic number, because the mean of its divisors is an integer number (15761476).

Almost surely, 2^55165159 is an apocalyptic number.

55165159 is a deficient number, since it is larger than the sum of its proper divisors (7880745).

55165159 is an equidigital number, since it uses as much as digits as its factorization.

55165159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880744.

The product of its digits is 33750, while the sum is 37.

The square root of 55165159 is about 7427.3251578210. The cubic root of 55165159 is about 380.6755273944.

The spelling of 55165159 in words is "fifty-five million, one hundred sixty-five thousand, one hundred fifty-nine".