52503431 has 4 divisors (see below), whose sum is σ = 52527864. Its totient is φ = 52479000.

The previous prime is 52503421. The next prime is 52503433. The reversal of 52503431 is 13430525.

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-52503431 is a prime.

It is a super-2 number, since 2×52503431² = 5513220533543522, 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 = 52503397 and 52503406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52503433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8645 + ... + 13406.

It is an arithmetic number, because the mean of its divisors is an integer number (13131966).

Almost surely, 2^52503431 is an apocalyptic number.

52503431 is a deficient number, since it is larger than the sum of its proper divisors (24433).

52503431 is a wasteful number, since it uses less digits than its factorization.

52503431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24432.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 52503431 is about 7245.9251307200. The cubic root of 52503431 is about 374.4517761106.

Adding to 52503431 its reverse (13430525), we get a palindrome (65933956).

The spelling of 52503431 in words is "fifty-two million, five hundred three thousand, four hundred thirty-one".