525433231 has 2 divisors, whose sum is σ = 525433232. Its totient is φ = 525433230.

The previous prime is 525433171. The next prime is 525433241. The reversal of 525433231 is 132334525.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-525433231 is a prime.

It is a super-2 number, since 2×525433231² = 552160160478198722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 525433231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525433241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262716615 + 262716616.

It is an arithmetic number, because the mean of its divisors is an integer number (262716616).

Almost surely, 2^525433231 is an apocalyptic number.

525433231 is a deficient number, since it is larger than the sum of its proper divisors (1).

525433231 is an equidigital number, since it uses as much as digits as its factorization.

525433231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 28.

The square root of 525433231 is about 22922.3304007250. The cubic root of 525433231 is about 806.9361627346.

Adding to 525433231 its reverse (132334525), we get a palindrome (657767756).

The spelling of 525433231 in words is "five hundred twenty-five million, four hundred thirty-three thousand, two hundred thirty-one".