21414453 has 8 divisors (see below), whose sum is σ = 29324448. Its totient is φ = 13890384.

The previous prime is 21414431. The next prime is 21414457. The reversal of 21414453 is 35441412.

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

It is not a de Polignac number, because 21414453 - 2⁶ = 21414389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21414457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96351 + ... + 96572.

It is an arithmetic number, because the mean of its divisors is an integer number (3665556).

Almost surely, 2^21414453 is an apocalyptic number.

It is an amenable number.

21414453 is a deficient number, since it is larger than the sum of its proper divisors (7909995).

21414453 is a wasteful number, since it uses less digits than its factorization.

21414453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192963.

The product of its digits is 1920, while the sum is 24.

The square root of 21414453 is about 4627.5752830181. The cubic root of 21414453 is about 277.6955978348.

Adding to 21414453 its reverse (35441412), we get a palindrome (56855865).

The spelling of 21414453 in words is "twenty-one million, four hundred fourteen thousand, four hundred fifty-three".