55515165 has 32 divisors (see below), whose sum is σ = 91152000. Its totient is φ = 28842240.

The previous prime is 55515157. The next prime is 55515167. The reversal of 55515165 is 56151555.

55515165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55515165 - 2³ = 55515157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55515167) 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 31 ways as a sum of consecutive naturals, for example, 131655 + ... + 132075.

It is an arithmetic number, because the mean of its divisors is an integer number (2848500).

Almost surely, 2^55515165 is an apocalyptic number.

It is an amenable number.

55515165 is a deficient number, since it is larger than the sum of its proper divisors (35636835).

55515165 is a wasteful number, since it uses less digits than its factorization.

55515165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637.

The product of its digits is 18750, while the sum is 33.

The square root of 55515165 is about 7450.8499515156. The cubic root of 55515165 is about 381.4789204772.

The spelling of 55515165 in words is "fifty-five million, five hundred fifteen thousand, one hundred sixty-five".