53621165 has 48 divisors (see below), whose sum is σ = 75893760. Its totient is φ = 36241920.

The previous prime is 53621159. The next prime is 53621167. The reversal of 53621165 is 56112635.

53621165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-53621165 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53621167) 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 47 ways as a sum of consecutive naturals, for example, 602441 + ... + 602529.

It is an arithmetic number, because the mean of its divisors is an integer number (1581120).

Almost surely, 2^53621165 is an apocalyptic number.

It is an amenable number.

53621165 is a deficient number, since it is larger than the sum of its proper divisors (22272595).

53621165 is a wasteful number, since it uses less digits than its factorization.

53621165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 161 counting only the distinct ones).

The product of its digits is 5400, while the sum is 29.

The square root of 53621165 is about 7322.6474037741. The cubic root of 53621165 is about 377.0903469557.

The spelling of 53621165 in words is "fifty-three million, six hundred twenty-one thousand, one hundred sixty-five".