252421441 has 8 divisors (see below), whose sum is σ = 265857120. Its totient is φ = 239000832.

The previous prime is 252421387. The next prime is 252421447. The reversal of 252421441 is 144124252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252421441 - 2¹⁵ = 252388673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252421447) 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 7 ways as a sum of consecutive naturals, for example, 51681 + ... + 56353.

It is an arithmetic number, because the mean of its divisors is an integer number (33232140).

Almost surely, 2^252421441 is an apocalyptic number.

It is an amenable number.

252421441 is a deficient number, since it is larger than the sum of its proper divisors (13435679).

252421441 is a wasteful number, since it uses less digits than its factorization.

252421441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535.

The product of its digits is 2560, while the sum is 25.

The square root of 252421441 is about 15887.7764649431. The cubic root of 252421441 is about 631.9878764766.

Adding to 252421441 its reverse (144124252), we get a palindrome (396545693).

The spelling of 252421441 in words is "two hundred fifty-two million, four hundred twenty-one thousand, four hundred forty-one".