53093581 has 4 divisors (see below), whose sum is σ = 55888000. Its totient is φ = 50299164.

The previous prime is 53093561. The next prime is 53093627. The reversal of 53093581 is 18539035.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53093581 - 2¹⁷ = 52962509 is a prime.

It is a super-2 number, since 2×53093581² = 5637856686807122, 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 (53093561) 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, 1397181 + ... + 1397218.

It is an arithmetic number, because the mean of its divisors is an integer number (13972000).

Almost surely, 2^53093581 is an apocalyptic number.

It is an amenable number.

53093581 is a deficient number, since it is larger than the sum of its proper divisors (2794419).

53093581 is a wasteful number, since it uses less digits than its factorization.

53093581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794418.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 53093581 is about 7286.5342241700. The cubic root of 53093581 is about 375.8495252907.

The spelling of 53093581 in words is "fifty-three million, ninety-three thousand, five hundred eighty-one".