53872591 has 4 divisors (see below), whose sum is σ = 53955000. Its totient is φ = 53790184.

The previous prime is 53872547. The next prime is 53872607. The reversal of 53872591 is 19527835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53872591 - 2¹⁵ = 53839823 is a prime.

It is a super-2 number, since 2×53872591² = 5804512122106562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51872591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40216 + ... + 41533.

It is an arithmetic number, because the mean of its divisors is an integer number (13488750).

Almost surely, 2^53872591 is an apocalyptic number.

53872591 is a deficient number, since it is larger than the sum of its proper divisors (82409).

53872591 is an equidigital number, since it uses as much as digits as its factorization.

53872591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82408.

The product of its digits is 75600, while the sum is 40.

The square root of 53872591 is about 7339.7950243859. The cubic root of 53872591 is about 377.6788118278.

The spelling of 53872591 in words is "fifty-three million, eight hundred seventy-two thousand, five hundred ninety-one".