21314453 has 8 divisors (see below), whose sum is σ = 22471680. Its totient is φ = 20186640.

The previous prime is 21314443. The next prime is 21314473. The reversal of 21314453 is 35441312.

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

It is a cyclic number.

It is not a de Polignac number, because 21314453 - 2¹⁰ = 21313429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314443) by changing a digit.

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, 5858 + ... + 8771.

It is an arithmetic number, because the mean of its divisors is an integer number (2808960).

Almost surely, 2^21314453 is an apocalyptic number.

It is an amenable number.

21314453 is a deficient number, since it is larger than the sum of its proper divisors (1157227).

21314453 is a wasteful number, since it uses less digits than its factorization.

21314453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14707.

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

The square root of 21314453 is about 4616.7578450683. The cubic root of 21314453 is about 277.2626675167.

Adding to 21314453 its reverse (35441312), we get a palindrome (56755765).

The spelling of 21314453 in words is "twenty-one million, three hundred fourteen thousand, four hundred fifty-three".