252218441 has 4 divisors (see below), whose sum is σ = 252272592. Its totient is φ = 252164292.

The previous prime is 252218401. The next prime is 252218453. The reversal of 252218441 is 144812252.

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 252218441 - 2⁶ = 252218377 is a prime.

It is a super-2 number, since 2×252218441² = 127228283960940962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252218401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19355 + ... + 29648.

It is an arithmetic number, because the mean of its divisors is an integer number (63068148).

Almost surely, 2^252218441 is an apocalyptic number.

It is an amenable number.

252218441 is a deficient number, since it is larger than the sum of its proper divisors (54151).

252218441 is an equidigital number, since it uses as much as digits as its factorization.

252218441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54150.

The product of its digits is 5120, while the sum is 29.

The square root of 252218441 is about 15881.3866208212. The cubic root of 252218441 is about 631.8184139229.

The spelling of 252218441 in words is "two hundred fifty-two million, two hundred eighteen thousand, four hundred forty-one".