252641287 has 2 divisors, whose sum is σ = 252641288. Its totient is φ = 252641286.

The previous prime is 252641261. The next prime is 252641317. The reversal of 252641287 is 782146252.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252641287 - 2¹⁵ = 252608519 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252641087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126320643 + 126320644.

It is an arithmetic number, because the mean of its divisors is an integer number (126320644).

Almost surely, 2^252641287 is an apocalyptic number.

252641287 is a deficient number, since it is larger than the sum of its proper divisors (1).

252641287 is an equidigital number, since it uses as much as digits as its factorization.

252641287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 252641287 is about 15894.6936743053. The cubic root of 252641287 is about 632.1712994710.

The spelling of 252641287 in words is "two hundred fifty-two million, six hundred forty-one thousand, two hundred eighty-seven".