53893731 has 4 divisors (see below), whose sum is σ = 71858312. Its totient is φ = 35929152.

The previous prime is 53893729. The next prime is 53893753. The reversal of 53893731 is 13739835.

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

It is not a de Polignac number, because 53893731 - 2¹ = 53893729 is a prime.

It is a super-2 number, since 2×53893731² = 5809068482200722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53893731.

It is not an unprimeable number, because it can be changed into a prime (53893711) 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, 8982286 + ... + 8982291.

It is an arithmetic number, because the mean of its divisors is an integer number (17964578).

Almost surely, 2^53893731 is an apocalyptic number.

53893731 is a deficient number, since it is larger than the sum of its proper divisors (17964581).

53893731 is a wasteful number, since it uses less digits than its factorization.

53893731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17964580.

The product of its digits is 68040, while the sum is 39.

The square root of 53893731 is about 7341.2349778494. The cubic root of 53893731 is about 377.7282066797.

The spelling of 53893731 in words is "fifty-three million, eight hundred ninety-three thousand, seven hundred thirty-one".