252133321 has 4 divisors (see below), whose sum is σ = 275054544. Its totient is φ = 229212100.

The previous prime is 252133303. The next prime is 252133327. The reversal of 252133321 is 123331252.

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 252133321 - 2⁹ = 252132809 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 252133292 and 252133301.

It is not an unprimeable number, because it can be changed into a prime (252133327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11460595 + ... + 11460616.

It is an arithmetic number, because the mean of its divisors is an integer number (68763636).

Almost surely, 2^252133321 is an apocalyptic number.

It is an amenable number.

252133321 is a deficient number, since it is larger than the sum of its proper divisors (22921223).

252133321 is a wasteful number, since it uses less digits than its factorization.

252133321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22921222.

The product of its digits is 1080, while the sum is 22.

The square root of 252133321 is about 15878.7065279260. The cubic root of 252133321 is about 631.7473294635.

Adding to 252133321 its reverse (123331252), we get a palindrome (375464573).

The spelling of 252133321 in words is "two hundred fifty-two million, one hundred thirty-three thousand, three hundred twenty-one".