522251161 has 2 divisors, whose sum is σ = 522251162. Its totient is φ = 522251160.

The previous prime is 522251159. The next prime is 522251173. The reversal of 522251161 is 161152225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 448634761 + 73616400 = 21181^2 + 8580^2 .

It is a cyclic number.

It is not a de Polignac number, because 522251161 - 2¹ = 522251159 is a prime.

Together with 522251159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (522252161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261125580 + 261125581.

It is an arithmetic number, because the mean of its divisors is an integer number (261125581).

Almost surely, 2^522251161 is an apocalyptic number.

It is an amenable number.

522251161 is a deficient number, since it is larger than the sum of its proper divisors (1).

522251161 is an equidigital number, since it uses as much as digits as its factorization.

522251161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 25.

The square root of 522251161 is about 22852.8151657515. The cubic root of 522251161 is about 805.3039043903.

The spelling of 522251161 in words is "five hundred twenty-two million, two hundred fifty-one thousand, one hundred sixty-one".