52040531 has 4 divisors (see below), whose sum is σ = 52085064. Its totient is φ = 51996000.

The previous prime is 52040509. The next prime is 52040561. The reversal of 52040531 is 13504025.

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-52040531 is a prime.

It is a super-2 number, since 2×52040531² = 5416433733523922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52040561) 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, 20465 + ... + 22866.

It is an arithmetic number, because the mean of its divisors is an integer number (13021266).

Almost surely, 2^52040531 is an apocalyptic number.

52040531 is a deficient number, since it is larger than the sum of its proper divisors (44533).

52040531 is a wasteful number, since it uses less digits than its factorization.

52040531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44532.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 52040531 is about 7213.9123227275. The cubic root of 52040531 is about 373.3480664006.

Adding to 52040531 its reverse (13504025), we get a palindrome (65544556).

The spelling of 52040531 in words is "fifty-two million, forty thousand, five hundred thirty-one".