21415083 has 8 divisors (see below), whose sum is σ = 28915200. Its totient is φ = 14095848.

The previous prime is 21415081. The next prime is 21415099. The reversal of 21415083 is 38051412.

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

It is not a de Polignac number, because 21415083 - 2¹ = 21415081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21415081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44943 + ... + 45416.

It is an arithmetic number, because the mean of its divisors is an integer number (3614400).

Almost surely, 2^21415083 is an apocalyptic number.

21415083 is a deficient number, since it is larger than the sum of its proper divisors (7500117).

21415083 is an equidigital number, since it uses as much as digits as its factorization.

21415083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90441.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 21415083 is about 4627.6433527229. The cubic root of 21415083 is about 277.6983210192.

Adding to 21415083 its reverse (38051412), we get a palindrome (59466495).

The spelling of 21415083 in words is "twenty-one million, four hundred fifteen thousand, eighty-three".