21255314 has 8 divisors (see below), whose sum is σ = 31922748. Its totient is φ = 10614400.

The previous prime is 21255307. The next prime is 21255317. The reversal of 21255314 is 41355212.

It can be written as a sum of positive squares in 2 ways, for example, as 20475625 + 779689 = 4525^2 + 883^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21255314.

It is not an unprimeable number, because it can be changed into a prime (21255317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4487 + ... + 7914.

Almost surely, 2^21255314 is an apocalyptic number.

21255314 is a deficient number, since it is larger than the sum of its proper divisors (10667434).

21255314 is a wasteful number, since it uses less digits than its factorization.

21255314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13260.

The product of its digits is 1200, while the sum is 23.

The square root of 21255314 is about 4610.3485768432. The cubic root of 21255314 is about 277.0059993401.

The spelling of 21255314 in words is "twenty-one million, two hundred fifty-five thousand, three hundred fourteen".