252566231 has 2 divisors, whose sum is σ = 252566232. Its totient is φ = 252566230.

The previous prime is 252566201. The next prime is 252566233. The reversal of 252566231 is 132665252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252566231 is a prime.

It is a super-3 number, since 3×252566231³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 252566233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252566233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126283115 + 126283116.

It is an arithmetic number, because the mean of its divisors is an integer number (126283116).

Almost surely, 2^252566231 is an apocalyptic number.

252566231 is a deficient number, since it is larger than the sum of its proper divisors (1).

252566231 is an equidigital number, since it uses as much as digits as its factorization.

252566231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600, while the sum is 32.

The square root of 252566231 is about 15892.3324593969. The cubic root of 252566231 is about 632.1086903476.

The spelling of 252566231 in words is "two hundred fifty-two million, five hundred sixty-six thousand, two hundred thirty-one".