53020431 has 18 divisors (see below), whose sum is σ = 80832960. Its totient is φ = 33484536.

The previous prime is 53020427. The next prime is 53020453. The reversal of 53020431 is 13402035.

It is not a de Polignac number, because 53020431 - 2² = 53020427 is a prime.

It is a super-2 number, since 2×53020431² = 5622332206851522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53020481) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4911 + ... + 11408.

It is an arithmetic number, because the mean of its divisors is an integer number (4490720).

Almost surely, 2^53020431 is an apocalyptic number.

53020431 is a deficient number, since it is larger than the sum of its proper divisors (27812529).

53020431 is a wasteful number, since it uses less digits than its factorization.

53020431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16363 (or 16341 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53020431 is about 7281.5129609168. The cubic root of 53020431 is about 375.6768363120.

Adding to 53020431 its reverse (13402035), we get a palindrome (66422466).

The spelling of 53020431 in words is "fifty-three million, twenty thousand, four hundred thirty-one".