21060159 has 8 divisors (see below), whose sum is σ = 28396080. Its totient is φ = 13882176.

The previous prime is 21060139. The next prime is 21060163. The reversal of 21060159 is 95106012.

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

It is not a de Polignac number, because 21060159 - 2¹¹ = 21058111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21060139) 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, 39172 + ... + 39705.

It is an arithmetic number, because the mean of its divisors is an integer number (3549510).

Almost surely, 2^21060159 is an apocalyptic number.

21060159 is a deficient number, since it is larger than the sum of its proper divisors (7335921).

21060159 is an equidigital number, since it uses as much as digits as its factorization.

21060159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78969.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 21060159 is about 4589.1348857927. The cubic root of 21060159 is about 276.1556174505.

The spelling of 21060159 in words is "twenty-one million, sixty thousand, one hundred fifty-nine".