53189665 has 16 divisors (see below), whose sum is σ = 65795328. Its totient is φ = 41257216.

The previous prime is 53189657. The next prime is 53189701. The reversal of 53189665 is 56698135.

It is a cyclic number.

It is not a de Polignac number, because 53189665 - 2³ = 53189657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25554 + ... + 27556.

It is an arithmetic number, because the mean of its divisors is an integer number (4112208).

Almost surely, 2^53189665 is an apocalyptic number.

It is an amenable number.

53189665 is a deficient number, since it is larger than the sum of its proper divisors (12605663).

53189665 is a wasteful number, since it uses less digits than its factorization.

53189665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168.

The product of its digits is 194400, while the sum is 43.

The square root of 53189665 is about 7293.1245018853. The cubic root of 53189665 is about 376.0761149099.

The spelling of 53189665 in words is "fifty-three million, one hundred eighty-nine thousand, six hundred sixty-five".