525551231 has 2 divisors, whose sum is σ = 525551232. Its totient is φ = 525551230.

The previous prime is 525551197. The next prime is 525551237. The reversal of 525551231 is 132155525.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 525551231 - 2⁶ = 525551167 is a prime.

It is a super-2 number, since 2×525551231² = 552408192811230722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 525551194 and 525551203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (525551237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262775615 + 262775616.

It is an arithmetic number, because the mean of its divisors is an integer number (262775616).

Almost surely, 2^525551231 is an apocalyptic number.

525551231 is a deficient number, since it is larger than the sum of its proper divisors (1).

525551231 is an equidigital number, since it uses as much as digits as its factorization.

525551231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7500, while the sum is 29.

The square root of 525551231 is about 22924.9041655576. The cubic root of 525551231 is about 806.9965645354.

The spelling of 525551231 in words is "five hundred twenty-five million, five hundred fifty-one thousand, two hundred thirty-one".