252864637 has 2 divisors, whose sum is σ = 252864638. Its totient is φ = 252864636.

The previous prime is 252864611. The next prime is 252864649. The reversal of 252864637 is 736468252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 252778201 + 86436 = 15899^2 + 294^2 .

It is a cyclic number.

It is not a de Polignac number, because 252864637 - 2¹⁵ = 252831869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252864593 and 252864602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252844637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126432318 + 126432319.

It is an arithmetic number, because the mean of its divisors is an integer number (126432319).

Almost surely, 2^252864637 is an apocalyptic number.

It is an amenable number.

252864637 is a deficient number, since it is larger than the sum of its proper divisors (1).

252864637 is an equidigital number, since it uses as much as digits as its factorization.

252864637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 43.

The square root of 252864637 is about 15901.7180518333. The cubic root of 252864637 is about 632.3575370062.

The spelling of 252864637 in words is "two hundred fifty-two million, eight hundred sixty-four thousand, six hundred thirty-seven".