252121514 has 16 divisors (see below), whose sum is σ = 388929600. Its totient is φ = 122526624.

The previous prime is 252121501. The next prime is 252121523. The reversal of 252121514 is 415121252.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 252121514.

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 7 ways as a sum of consecutive naturals, for example, 1502 + ... + 22505.

It is an arithmetic number, because the mean of its divisors is an integer number (24308100).

Almost surely, 2^252121514 is an apocalyptic number.

252121514 is a deficient number, since it is larger than the sum of its proper divisors (136808086).

252121514 is a wasteful number, since it uses less digits than its factorization.

252121514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24157.

The product of its digits is 800, while the sum is 23.

The square root of 252121514 is about 15878.3347363633. The cubic root of 252121514 is about 631.7374680707.

Adding to 252121514 its reverse (415121252), we get a palindrome (667242766).

The spelling of 252121514 in words is "two hundred fifty-two million, one hundred twenty-one thousand, five hundred fourteen".