252236161 has 2 divisors, whose sum is σ = 252236162. Its totient is φ = 252236160.

The previous prime is 252236111. The next prime is 252236167. The reversal of 252236161 is 161632252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226683136 + 25553025 = 15056^2 + 5055^2 .

It is a cyclic number.

It is not a de Polignac number, because 252236161 - 2¹¹ = 252234113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (252236167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126118080 + 126118081.

It is an arithmetic number, because the mean of its divisors is an integer number (126118081).

Almost surely, 2^252236161 is an apocalyptic number.

It is an amenable number.

252236161 is a deficient number, since it is larger than the sum of its proper divisors (1).

252236161 is an equidigital number, since it uses as much as digits as its factorization.

252236161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 28.

The square root of 252236161 is about 15881.9444968178. The cubic root of 252236161 is about 631.8332100391.

It can be divided in two parts, 2522 and 36161, that added together give a palindrome (38683).

The spelling of 252236161 in words is "two hundred fifty-two million, two hundred thirty-six thousand, one hundred sixty-one".