252794221 has 12 divisors (see below), whose sum is σ = 269203932. Its totient is φ = 237331584.

The previous prime is 252794209. The next prime is 252794281. The reversal of 252794221 is 122497252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39312900 + 213481321 = 6270^2 + 14611^2 .

It is not a de Polignac number, because 252794221 - 2⁷ = 252794093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252794281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37695 + ... + 43891.

It is an arithmetic number, because the mean of its divisors is an integer number (22433661).

Almost surely, 2^252794221 is an apocalyptic number.

It is an amenable number.

252794221 is a deficient number, since it is larger than the sum of its proper divisors (16409711).

252794221 is a wasteful number, since it uses less digits than its factorization.

252794221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6348 (or 6329 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 252794221 is about 15899.5037972888. The cubic root of 252794221 is about 632.2988333683.

The spelling of 252794221 in words is "two hundred fifty-two million, seven hundred ninety-four thousand, two hundred twenty-one".