252304421 has 4 divisors (see below), whose sum is σ = 253100652. Its totient is φ = 251508192.

The previous prime is 252304417. The next prime is 252304427. The reversal of 252304421 is 124403252.

It is a happy number.

252304421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73788100 + 178516321 = 8590^2 + 13361^2 .

It is a cyclic number.

It is not a de Polignac number, because 252304421 - 2² = 252304417 is a prime.

It is a super-2 number, since 2×252304421² = 127315041712290482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252304427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 397640 + ... + 398273.

It is an arithmetic number, because the mean of its divisors is an integer number (63275163).

Almost surely, 2^252304421 is an apocalyptic number.

It is an amenable number.

252304421 is a deficient number, since it is larger than the sum of its proper divisors (796231).

252304421 is an equidigital number, since it uses as much as digits as its factorization.

252304421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796230.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 252304421 is about 15884.0933326394. The cubic root of 252304421 is about 631.8902003412.

Adding to 252304421 its reverse (124403252), we get a palindrome (376707673).

The spelling of 252304421 in words is "two hundred fifty-two million, three hundred four thousand, four hundred twenty-one".