252810557 has 2 divisors, whose sum is σ = 252810558. Its totient is φ = 252810556.

The previous prime is 252810541. The next prime is 252810563. The reversal of 252810557 is 755018252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167081476 + 85729081 = 12926^2 + 9259^2 .

It is a cyclic number.

It is not a de Polignac number, because 252810557 - 2⁴ = 252810541 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252810527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126405278 + 126405279.

It is an arithmetic number, because the mean of its divisors is an integer number (126405279).

Almost surely, 2^252810557 is an apocalyptic number.

It is an amenable number.

252810557 is a deficient number, since it is larger than the sum of its proper divisors (1).

252810557 is an equidigital number, since it uses as much as digits as its factorization.

252810557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 252810557 is about 15900.0175157136. The cubic root of 252810557 is about 632.3124531565.

The spelling of 252810557 in words is "two hundred fifty-two million, eight hundred ten thousand, five hundred fifty-seven".