252688633 has 2 divisors, whose sum is σ = 252688634. Its totient is φ = 252688632.

The previous prime is 252688613. The next prime is 252688643. The reversal of 252688633 is 336886252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149523984 + 103164649 = 12228^2 + 10157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252688633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252688633.

It is not a weakly prime, because it can be changed into another prime (252688613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126344316 + 126344317.

It is an arithmetic number, because the mean of its divisors is an integer number (126344317).

Almost surely, 2^252688633 is an apocalyptic number.

It is an amenable number.

252688633 is a deficient number, since it is larger than the sum of its proper divisors (1).

252688633 is an equidigital number, since it uses as much as digits as its factorization.

252688633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 43.

The square root of 252688633 is about 15896.1829695056. The cubic root of 252688633 is about 632.2107874913.

The spelling of 252688633 in words is "two hundred fifty-two million, six hundred eighty-eight thousand, six hundred thirty-three".