252221214 has 64 divisors (see below), whose sum is σ = 620531712. Its totient is φ = 66700800.

The previous prime is 252221209. The next prime is 252221261. The reversal of 252221214 is 412122252.

252221214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40659 + ... + 46449.

It is an arithmetic number, because the mean of its divisors is an integer number (9695808).

Almost surely, 2^252221214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 252221214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310265856).

252221214 is an abundant number, since it is smaller than the sum of its proper divisors (368310498).

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

252221214 is a wasteful number, since it uses less digits than its factorization.

252221214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881.

The product of its digits is 640, while the sum is 21.

The square root of 252221214 is about 15881.4739240412. The cubic root of 252221214 is about 631.8207294105.

Adding to 252221214 its reverse (412122252), we get a palindrome (664343466).

The spelling of 252221214 in words is "two hundred fifty-two million, two hundred twenty-one thousand, two hundred fourteen".