53040731 has 8 divisors (see below), whose sum is σ = 56659824. Its totient is φ = 49477120.

The previous prime is 53040727. The next prime is 53040787. The reversal of 53040731 is 13704035.

It is a happy number.

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 53040731 - 2² = 53040727 is a prime.

It is a super-2 number, since 2×53040731² = 5626638290028722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53040697 and 53040706.

It is not an unprimeable number, because it can be changed into a prime (53040131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11885 + ... + 15726.

It is an arithmetic number, because the mean of its divisors is an integer number (7082478).

Almost surely, 2^53040731 is an apocalyptic number.

53040731 is a deficient number, since it is larger than the sum of its proper divisors (3619093).

53040731 is a wasteful number, since it uses less digits than its factorization.

53040731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27741.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 53040731 is about 7282.9067685918. The cubic root of 53040731 is about 375.7247754841.

Adding to 53040731 its reverse (13704035), we get a palindrome (66744766).

The spelling of 53040731 in words is "fifty-three million, forty thousand, seven hundred thirty-one".