21300159 has 16 divisors (see below), whose sum is σ = 30310400. Its totient is φ = 13265856.

The previous prime is 21300143. The next prime is 21300173. The reversal of 21300159 is 95100312.

It is not a de Polignac number, because 21300159 - 2⁴ = 21300143 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 (21300119) 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 15 ways as a sum of consecutive naturals, for example, 1602 + ... + 6720.

It is an arithmetic number, because the mean of its divisors is an integer number (1894400).

Almost surely, 2^21300159 is an apocalyptic number.

21300159 is a deficient number, since it is larger than the sum of its proper divisors (9010241).

21300159 is a wasteful number, since it uses less digits than its factorization.

21300159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 21300159 is about 4615.2095293713. The cubic root of 21300159 is about 277.2006739196.

The spelling of 21300159 in words is "twenty-one million, three hundred thousand, one hundred fifty-nine".