252091121 has 2 divisors, whose sum is σ = 252091122. Its totient is φ = 252091120.

The previous prime is 252091111. The next prime is 252091123. The reversal of 252091121 is 121190252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141610000 + 110481121 = 11900^2 + 10511^2 .

It is a cyclic number.

It is not a de Polignac number, because 252091121 - 2⁶ = 252091057 is a prime.

Together with 252091123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252091123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126045560 + 126045561.

It is an arithmetic number, because the mean of its divisors is an integer number (126045561).

Almost surely, 2^252091121 is an apocalyptic number.

It is an amenable number.

252091121 is a deficient number, since it is larger than the sum of its proper divisors (1).

252091121 is an equidigital number, since it uses as much as digits as its factorization.

252091121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 252091121 is about 15877.3776487177. The cubic root of 252091121 is about 631.7120819409.

The spelling of 252091121 in words is "two hundred fifty-two million, ninety-one thousand, one hundred twenty-one".