252477257 has 2 divisors, whose sum is σ = 252477258. Its totient is φ = 252477256.

The previous prime is 252477229. The next prime is 252477259. The reversal of 252477257 is 752774252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242861056 + 9616201 = 15584^2 + 3101^2 .

It is a cyclic number.

It is not a de Polignac number, because 252477257 - 2⁶ = 252477193 is a prime.

Together with 252477259, 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 (252477259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126238628 + 126238629.

It is an arithmetic number, because the mean of its divisors is an integer number (126238629).

Almost surely, 2^252477257 is an apocalyptic number.

It is an amenable number.

252477257 is a deficient number, since it is larger than the sum of its proper divisors (1).

252477257 is an equidigital number, since it uses as much as digits as its factorization.

252477257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 274400, while the sum is 41.

The square root of 252477257 is about 15889.5329383843. The cubic root of 252477257 is about 632.0344552398.

The spelling of 252477257 in words is "two hundred fifty-two million, four hundred seventy-seven thousand, two hundred fifty-seven".