21483607 has 4 divisors (see below), whose sum is σ = 21647736. Its totient is φ = 21319480.

The previous prime is 21483593. The next prime is 21483641. The reversal of 21483607 is 70638412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21483607 - 2¹⁵ = 21450839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21483697) 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 3 ways as a sum of consecutive naturals, for example, 81868 + ... + 82129.

It is an arithmetic number, because the mean of its divisors is an integer number (5411934).

Almost surely, 2^21483607 is an apocalyptic number.

21483607 is a deficient number, since it is larger than the sum of its proper divisors (164129).

21483607 is a wasteful number, since it uses less digits than its factorization.

21483607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164128.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 21483607 is about 4635.0412080153. The cubic root of 21483607 is about 277.9941987644.

The spelling of 21483607 in words is "twenty-one million, four hundred eighty-three thousand, six hundred seven".