214521252 has 48 divisors (see below), whose sum is σ = 547643712. Its totient is φ = 64817280.

The previous prime is 214521233. The next prime is 214521287. The reversal of 214521252 is 252125412.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47058 + ... + 51414.

It is an arithmetic number, because the mean of its divisors is an integer number (11409244).

Almost surely, 2^214521252 is an apocalyptic number.

214521252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

214521252 is an abundant number, since it is smaller than the sum of its proper divisors (333122460).

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

214521252 is a wasteful number, since it uses less digits than its factorization.

214521252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748 (or 4746 counting only the distinct ones).

The product of its digits is 1600, while the sum is 24.

The square root of 214521252 is about 14646.5440292241. The cubic root of 214521252 is about 598.6276523854.

Adding to 214521252 its reverse (252125412), we get a palindrome (466646664).

The spelling of 214521252 in words is "two hundred fourteen million, five hundred twenty-one thousand, two hundred fifty-two".