252144321 has 16 divisors (see below), whose sum is σ = 394968000. Its totient is φ = 141059520.

The previous prime is 252144313. The next prime is 252144337. The reversal of 252144321 is 123441252.

252144321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252144321 - 2³ = 252144313 is a prime.

It is a super-2 number, since 2×252144321² = 127153517225102082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 252144291 and 252144300.

It is not an unprimeable number, because it can be changed into a prime (252144341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293446 + ... + 294303.

It is an arithmetic number, because the mean of its divisors is an integer number (24685500).

Almost surely, 2^252144321 is an apocalyptic number.

It is an amenable number.

252144321 is a deficient number, since it is larger than the sum of its proper divisors (142823679).

252144321 is a wasteful number, since it uses less digits than its factorization.

252144321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587776.

The product of its digits is 1920, while the sum is 24.

The square root of 252144321 is about 15879.0528999686. The cubic root of 252144321 is about 631.7565165602.

Adding to 252144321 its reverse (123441252), we get a palindrome (375585573).

The spelling of 252144321 in words is "two hundred fifty-two million, one hundred forty-four thousand, three hundred twenty-one".