53727431 has 4 divisors (see below), whose sum is σ = 54331200. Its totient is φ = 53123664.

The previous prime is 53727353. The next prime is 53727437. The reversal of 53727431 is 13472735.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53727431 is a prime.

It is a super-2 number, since 2×53727431² = 5773273683719522, 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 (53727437) 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, 301751 + ... + 301928.

It is an arithmetic number, because the mean of its divisors is an integer number (13582800).

Almost surely, 2^53727431 is an apocalyptic number.

53727431 is a deficient number, since it is larger than the sum of its proper divisors (603769).

53727431 is an equidigital number, since it uses as much as digits as its factorization.

53727431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603768.

The product of its digits is 17640, while the sum is 32.

The square root of 53727431 is about 7329.8997946766. The cubic root of 53727431 is about 377.3392874660.

The spelling of 53727431 in words is "fifty-three million, seven hundred twenty-seven thousand, four hundred thirty-one".