52511231 has 8 divisors (see below), whose sum is σ = 57678720. Its totient is φ = 47584152.

The previous prime is 52511227. The next prime is 52511233. The reversal of 52511231 is 13211525.

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 52511231 - 2² = 52511227 is a prime.

It is a super-2 number, since 2×52511231² = 5514858762270722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52511233) 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, 59645 + ... + 60518.

It is an arithmetic number, because the mean of its divisors is an integer number (7209840).

Almost surely, 2^52511231 is an apocalyptic number.

52511231 is a deficient number, since it is larger than the sum of its proper divisors (5167489).

52511231 is a wasteful number, since it uses less digits than its factorization.

52511231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120205.

The product of its digits is 300, while the sum is 20.

The square root of 52511231 is about 7246.4633442804. The cubic root of 52511231 is about 374.4703182590.

Adding to 52511231 its reverse (13211525), we get a palindrome (65722756).

The spelling of 52511231 in words is "fifty-two million, five hundred eleven thousand, two hundred thirty-one".