53538665 has 16 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 41648640.

The previous prime is 53538659. The next prime is 53538671. The reversal of 53538665 is 56683535.

It is an interprime number because it is at equal distance from previous prime (53538659) and next prime (53538671).

It is not a de Polignac number, because 53538665 - 2⁶ = 53538601 is a prime.

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, 27680 + ... + 29550.

It is an arithmetic number, because the mean of its divisors is an integer number (4127760).

Almost surely, 2^53538665 is an apocalyptic number.

It is an amenable number.

53538665 is a deficient number, since it is larger than the sum of its proper divisors (12505495).

53538665 is a wasteful number, since it uses less digits than its factorization.

53538665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032.

The product of its digits is 324000, while the sum is 41.

The square root of 53538665 is about 7317.0120267771. The cubic root of 53538665 is about 376.8968541919.

The spelling of 53538665 in words is "fifty-three million, five hundred thirty-eight thousand, six hundred sixty-five".