21352083 has 8 divisors (see below), whose sum is σ = 28687296. Its totient is φ = 14125800.

The previous prime is 21352069. The next prime is 21352099. The reversal of 21352083 is 38025312.

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

It is not a de Polignac number, because 21352083 - 2⁹ = 21351571 is a prime.

It is a super-2 number, since 2×21352083² = 911822896877778, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (21352183) 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, 26773 + ... + 27558.

It is an arithmetic number, because the mean of its divisors is an integer number (3585912).

Almost surely, 2^21352083 is an apocalyptic number.

21352083 is a deficient number, since it is larger than the sum of its proper divisors (7335213).

21352083 is a wasteful number, since it uses less digits than its factorization.

21352083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54465.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 21352083 is about 4620.8314186951. The cubic root of 21352083 is about 277.4257377779.

Adding to 21352083 its reverse (38025312), we get a palindrome (59377395).

It can be divided in two parts, 2135208 and 3, that added together give a triangular number (2135211 = T₂₀₆₆).

The spelling of 21352083 in words is "twenty-one million, three hundred fifty-two thousand, eighty-three".