252441181 has 2 divisors, whose sum is σ = 252441182. Its totient is φ = 252441180.

The previous prime is 252441179. The next prime is 252441187. The reversal of 252441181 is 181144252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180768025 + 71673156 = 13445^2 + 8466^2 .

It is a cyclic number.

It is not a de Polignac number, because 252441181 - 2¹ = 252441179 is a prime.

It is a super-2 number, since 2×252441181² = 127453099729349522, which contains 22 as substring.

Together with 252441179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252441187) 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, 126220590 + 126220591.

It is an arithmetic number, because the mean of its divisors is an integer number (126220591).

Almost surely, 2^252441181 is an apocalyptic number.

It is an amenable number.

252441181 is a deficient number, since it is larger than the sum of its proper divisors (1).

252441181 is an equidigital number, since it uses as much as digits as its factorization.

252441181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2560, while the sum is 28.

The square root of 252441181 is about 15888.3976851034. The cubic root of 252441181 is about 632.0043504013.

The spelling of 252441181 in words is "two hundred fifty-two million, four hundred forty-one thousand, one hundred eighty-one".