55641165 has 16 divisors (see below), whose sum is σ = 89496576. Its totient is φ = 29518400.

The previous prime is 55641161. The next prime is 55641199. The reversal of 55641165 is 56114655.

It is not a de Polignac number, because 55641165 - 2² = 55641161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55641161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6846 + ... + 12575.

It is an arithmetic number, because the mean of its divisors is an integer number (5593536).

Almost surely, 2^55641165 is an apocalyptic number.

It is an amenable number.

55641165 is a deficient number, since it is larger than the sum of its proper divisors (33855411).

55641165 is a wasteful number, since it uses less digits than its factorization.

55641165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19620.

The product of its digits is 18000, while the sum is 33.

The square root of 55641165 is about 7459.3005704288. The cubic root of 55641165 is about 381.7673102962.

The spelling of 55641165 in words is "fifty-five million, six hundred forty-one thousand, one hundred sixty-five".