252322261 has 4 divisors (see below), whose sum is σ = 265602400. Its totient is φ = 239042124.

The previous prime is 252322253. The next prime is 252322267. The reversal of 252322261 is 162223252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 252322261 - 2³ = 252322253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252322267) 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 in 3 ways as a sum of consecutive naturals, for example, 6640041 + ... + 6640078.

It is an arithmetic number, because the mean of its divisors is an integer number (66400600).

Almost surely, 2^252322261 is an apocalyptic number.

It is an amenable number.

252322261 is a deficient number, since it is larger than the sum of its proper divisors (13280139).

252322261 is a wasteful number, since it uses less digits than its factorization.

252322261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13280138.

The product of its digits is 2880, while the sum is 25.

The square root of 252322261 is about 15884.6548908058. The cubic root of 252322261 is about 631.9050932702.

Subtracting from 252322261 its reverse (162223252), we obtain a palindrome (90099009).

The spelling of 252322261 in words is "two hundred fifty-two million, three hundred twenty-two thousand, two hundred sixty-one".