252635447 has 2 divisors, whose sum is σ = 252635448. Its totient is φ = 252635446.

The previous prime is 252635423. The next prime is 252635459. The reversal of 252635447 is 744536252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252635447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252635447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252635477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126317723 + 126317724.

It is an arithmetic number, because the mean of its divisors is an integer number (126317724).

Almost surely, 2^252635447 is an apocalyptic number.

252635447 is a deficient number, since it is larger than the sum of its proper divisors (1).

252635447 is an equidigital number, since it uses as much as digits as its factorization.

252635447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 38.

The square root of 252635447 is about 15894.5099641354. The cubic root of 252635447 is about 632.1664283896.

It can be divided in two parts, 2526 and 35447, that added together give a palindrome (37973).

The spelling of 252635447 in words is "two hundred fifty-two million, six hundred thirty-five thousand, four hundred forty-seven".