252199771 has 2 divisors, whose sum is σ = 252199772. Its totient is φ = 252199770.

The previous prime is 252199751. The next prime is 252199781. The reversal of 252199771 is 177991252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252199771 is a prime.

It is not a weakly prime, because it can be changed into another prime (252199721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126099885 + 126099886.

It is an arithmetic number, because the mean of its divisors is an integer number (126099886).

Almost surely, 2^252199771 is an apocalyptic number.

252199771 is a deficient number, since it is larger than the sum of its proper divisors (1).

252199771 is an equidigital number, since it uses as much as digits as its factorization.

252199771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 43.

The square root of 252199771 is about 15880.7988149211. The cubic root of 252199771 is about 631.8028238114.

The spelling of 252199771 in words is "two hundred fifty-two million, one hundred ninety-nine thousand, seven hundred seventy-one".