252454221 has 12 divisors (see below), whose sum is σ = 369652348. Its totient is φ = 165996864.

The previous prime is 252454183. The next prime is 252454231. The reversal of 252454221 is 122454252.

It can be written as a sum of positive squares in 2 ways, for example, as 87048900 + 165405321 = 9330^2 + 12861^2 .

It is not a de Polignac number, because 252454221 - 2⁶ = 252454157 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 (252454231) 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 11 ways as a sum of consecutive naturals, for example, 191470 + ... + 192783.

Almost surely, 2^252454221 is an apocalyptic number.

It is an amenable number.

252454221 is a deficient number, since it is larger than the sum of its proper divisors (117198127).

252454221 is a wasteful number, since it uses less digits than its factorization.

252454221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384332 (or 384329 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 252454221 is about 15888.8080421409. The cubic root of 252454221 is about 632.0152324014.

The spelling of 252454221 in words is "two hundred fifty-two million, four hundred fifty-four thousand, two hundred twenty-one".