252021326 has 8 divisors (see below), whose sum is σ = 381929520. Its totient is φ = 124711488.

The previous prime is 252021299. The next prime is 252021347. The reversal of 252021326 is 623120252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 649346 + ... + 649733.

It is an arithmetic number, because the mean of its divisors is an integer number (47741190).

Almost surely, 2^252021326 is an apocalyptic number.

252021326 is a deficient number, since it is larger than the sum of its proper divisors (129908194).

252021326 is a wasteful number, since it uses less digits than its factorization.

252021326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299178.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 252021326 is about 15875.1795580397. The cubic root of 252021326 is about 631.6537770785.

Adding to 252021326 its reverse (623120252), we get a palindrome (875141578).

The spelling of 252021326 in words is "two hundred fifty-two million, twenty-one thousand, three hundred twenty-six".