21483115 has 8 divisors (see below), whose sum is σ = 25823808. Its totient is φ = 17157120.

The previous prime is 21483103. The next prime is 21483149. The reversal of 21483115 is 51138412.

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

It is not a de Polignac number, because 21483115 - 2⁷ = 21482987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21483115.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147 + ... + 6556.

It is an arithmetic number, because the mean of its divisors is an integer number (3227976).

Almost surely, 2^21483115 is an apocalyptic number.

21483115 is a deficient number, since it is larger than the sum of its proper divisors (4340693).

21483115 is an equidigital number, since it uses as much as digits as its factorization.

21483115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7349.

The product of its digits is 960, while the sum is 25.

The square root of 21483115 is about 4634.9881337496. The cubic root of 21483115 is about 277.9920766163.

The spelling of 21483115 in words is "twenty-one million, four hundred eighty-three thousand, one hundred fifteen".