55051165 has 16 divisors (see below), whose sum is σ = 71306928. Its totient is φ = 40559616.

The previous prime is 55051159. The next prime is 55051201. The reversal of 55051165 is 56115055.

It can be written as a sum of positive squares in 8 ways, for example, as 98596 + 54952569 = 314^2 + 7413^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55051165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41797 + ... + 43093.

It is an arithmetic number, because the mean of its divisors is an integer number (4456683).

Almost surely, 2^55051165 is an apocalyptic number.

It is an amenable number.

55051165 is a deficient number, since it is larger than the sum of its proper divisors (16255763).

55051165 is a wasteful number, since it uses less digits than its factorization.

55051165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 55051165 is about 7419.6472288108. The cubic root of 55051165 is about 380.4131356258.

It can be divided in two parts, 5505 and 1165, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 55051165 in words is "fifty-five million, fifty-one thousand, one hundred sixty-five".