252556481 has 2 divisors, whose sum is σ = 252556482. Its totient is φ = 252556480.

The previous prime is 252556477. The next prime is 252556483. The reversal of 252556481 is 184655252.

252556481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252301456 + 255025 = 15884^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 252556481 - 2² = 252556477 is a prime.

It is a super-2 number, since 2×252556481² = 127569552190206722, which contains 22 as substring.

Together with 252556483, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252556483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126278240 + 126278241.

It is an arithmetic number, because the mean of its divisors is an integer number (126278241).

Almost surely, 2^252556481 is an apocalyptic number.

It is an amenable number.

252556481 is a deficient number, since it is larger than the sum of its proper divisors (1).

252556481 is an equidigital number, since it uses as much as digits as its factorization.

252556481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96000, while the sum is 38.

The square root of 252556481 is about 15892.0257047363. The cubic root of 252556481 is about 632.1005563240.

The spelling of 252556481 in words is "two hundred fifty-two million, five hundred fifty-six thousand, four hundred eighty-one".