21468055 has 16 divisors (see below), whose sum is σ = 29738304. Its totient is φ = 14572800.

The previous prime is 21468047. The next prime is 21468067. The reversal of 21468055 is 55086412.

It is not a de Polignac number, because 21468055 - 2³ = 21468047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499 + ... + 6571.

It is an arithmetic number, because the mean of its divisors is an integer number (1858644).

Almost surely, 2^21468055 is an apocalyptic number.

21468055 is a deficient number, since it is larger than the sum of its proper divisors (8270249).

21468055 is a wasteful number, since it uses less digits than its factorization.

21468055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 21468055 is about 4633.3632493039. The cubic root of 21468055 is about 277.9271024985.

It can be divided in two parts, 2146 and 8055, that added together give a palindrome (10201).

The spelling of 21468055 in words is "twenty-one million, four hundred sixty-eight thousand, fifty-five".