525323231 has 4 divisors (see below), whose sum is σ = 529333464. Its totient is φ = 521313000.

The previous prime is 525323209. The next prime is 525323261. The reversal of 525323231 is 132323525.

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

It is a cyclic number.

It is not a de Polignac number, because 525323231 - 2⁶ = 525323167 is a prime.

It is a super-2 number, since 2×525323231² = 551928994056558722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 525323231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525323261) 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, 2004920 + ... + 2005181.

It is an arithmetic number, because the mean of its divisors is an integer number (132333366).

Almost surely, 2^525323231 is an apocalyptic number.

525323231 is a deficient number, since it is larger than the sum of its proper divisors (4010233).

525323231 is a wasteful number, since it uses less digits than its factorization.

525323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010232.

The product of its digits is 5400, while the sum is 26.

The square root of 525323231 is about 22919.9308681331. The cubic root of 525323231 is about 806.8798478262.

Adding to 525323231 its reverse (132323525), we get a palindrome (657646756).

The spelling of 525323231 in words is "five hundred twenty-five million, three hundred twenty-three thousand, two hundred thirty-one".