53043665 has 8 divisors (see below), whose sum is σ = 63692160. Its totient is φ = 42408432.

The previous prime is 53043637. The next prime is 53043671. The reversal of 53043665 is 56634035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 53043665 - 2¹⁰ = 53042641 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11576 + ... + 15494.

It is an arithmetic number, because the mean of its divisors is an integer number (7961520).

Almost surely, 2^53043665 is an apocalyptic number.

It is an amenable number.

53043665 is a deficient number, since it is larger than the sum of its proper divisors (10648495).

53043665 is a wasteful number, since it uses less digits than its factorization.

53043665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6631.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 53043665 is about 7283.1081963678. The cubic root of 53043665 is about 375.7317032177.

The spelling of 53043665 in words is "fifty-three million, forty-three thousand, six hundred sixty-five".