252181446 has 32 divisors (see below), whose sum is σ = 555676416. Its totient is φ = 75660000.

The previous prime is 252181439. The next prime is 252181463. The reversal of 252181446 is 644181252.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12250 + ... + 25581.

It is an arithmetic number, because the mean of its divisors is an integer number (17364888).

Almost surely, 2^252181446 is an apocalyptic number.

252181446 is an abundant number, since it is smaller than the sum of its proper divisors (303494970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

252181446 is a wasteful number, since it uses less digits than its factorization.

252181446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37948.

The product of its digits is 15360, while the sum is 33.

The square root of 252181446 is about 15880.2218498357. The cubic root of 252181446 is about 631.7875210389.

The spelling of 252181446 in words is "two hundred fifty-two million, one hundred eighty-one thousand, four hundred forty-six".