52501431 has 4 divisors (see below), whose sum is σ = 70001912. Its totient is φ = 35000952.

The previous prime is 52501417. The next prime is 52501451. The reversal of 52501431 is 13410525.

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

It is not a de Polignac number, because 52501431 - 2²¹ = 50404279 is a prime.

It is a super-2 number, since 2×52501431² = 5512800514095522, 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 = 52501398 and 52501407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52501411) 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, 8750236 + ... + 8750241.

It is an arithmetic number, because the mean of its divisors is an integer number (17500478).

Almost surely, 2^52501431 is an apocalyptic number.

52501431 is a deficient number, since it is larger than the sum of its proper divisors (17500481).

52501431 is a wasteful number, since it uses less digits than its factorization.

52501431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17500480.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 52501431 is about 7245.7871208034. The cubic root of 52501431 is about 374.4470214178.

Adding to 52501431 its reverse (13410525), we get a palindrome (65911956).

The spelling of 52501431 in words is "fifty-two million, five hundred one thousand, four hundred thirty-one".