252663461 has 2 divisors, whose sum is σ = 252663462. Its totient is φ = 252663460.

The previous prime is 252663421. The next prime is 252663517. The reversal of 252663461 is 164366252.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 225300100 + 27363361 = 15010^2 + 5231^2 .

It is a cyclic number.

It is not a de Polignac number, because 252663461 - 2²² = 248469157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a zygodrome in base 4.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252663421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126331730 + 126331731.

It is an arithmetic number, because the mean of its divisors is an integer number (126331731).

Almost surely, 2^252663461 is an apocalyptic number.

It is an amenable number.

252663461 is a deficient number, since it is larger than the sum of its proper divisors (1).

252663461 is an equidigital number, since it uses as much as digits as its factorization.

252663461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 35.

The square root of 252663461 is about 15895.3911873851. The cubic root of 252663461 is about 632.1897938832.

The spelling of 252663461 in words is "two hundred fifty-two million, six hundred sixty-three thousand, four hundred sixty-one".