21079295 has 4 divisors (see below), whose sum is σ = 25295160. Its totient is φ = 16863432.

The previous prime is 21079271. The next prime is 21079297. The reversal of 21079295 is 59297012.

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 21079295 - 2¹⁴ = 21062911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21079297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2107925 + ... + 2107934.

It is an arithmetic number, because the mean of its divisors is an integer number (6323790).

Almost surely, 2^21079295 is an apocalyptic number.

21079295 is a deficient number, since it is larger than the sum of its proper divisors (4215865).

21079295 is an equidigital number, since it uses as much as digits as its factorization.

21079295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4215864.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 21079295 is about 4591.2193369518. The cubic root of 21079295 is about 276.2392336938.

The spelling of 21079295 in words is "twenty-one million, seventy-nine thousand, two hundred ninety-five".