53665172 has 12 divisors (see below), whose sum is σ = 102451776. Its totient is φ = 24393240.

The previous prime is 53665159. The next prime is 53665193. The reversal of 53665172 is 27156635.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609788 + ... + 609875.

It is an arithmetic number, because the mean of its divisors is an integer number (8537648).

Almost surely, 2^53665172 is an apocalyptic number.

It is an amenable number.

53665172 is a deficient number, since it is larger than the sum of its proper divisors (48786604).

53665172 is a wasteful number, since it uses less digits than its factorization.

53665172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219678 (or 1219676 counting only the distinct ones).

The product of its digits is 37800, while the sum is 35.

The square root of 53665172 is about 7325.6516433693. The cubic root of 53665172 is about 377.1934783543.

The spelling of 53665172 in words is "fifty-three million, six hundred sixty-five thousand, one hundred seventy-two".