252451331 has 8 divisors (see below), whose sum is σ = 275664384. Its totient is φ = 229282120.

The previous prime is 252451307. The next prime is 252451337. The reversal of 252451331 is 133154252.

It is a happy number.

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 252451331 - 2²⁶ = 185342467 is a prime.

It is a super-2 number, since 2×252451331² = 127463349047343122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252451331.

It is not an unprimeable number, because it can be changed into a prime (252451337) 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 7 ways as a sum of consecutive naturals, for example, 1730 + ... + 22536.

It is an arithmetic number, because the mean of its divisors is an integer number (34458048).

Almost surely, 2^252451331 is an apocalyptic number.

252451331 is a deficient number, since it is larger than the sum of its proper divisors (23213053).

252451331 is a wasteful number, since it uses less digits than its factorization.

252451331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21921.

The product of its digits is 3600, while the sum is 26.

The square root of 252451331 is about 15888.7170973619. The cubic root of 252451331 is about 632.0128207021.

The spelling of 252451331 in words is "two hundred fifty-two million, four hundred fifty-one thousand, three hundred thirty-one".