21086095 has 8 divisors (see below), whose sum is σ = 25920720. Its totient is φ = 16457280.

The previous prime is 21086089. The next prime is 21086099. The reversal of 21086095 is 59068012.

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

It is not a de Polignac number, because 21086095 - 2⁹ = 21085583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21086099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51225 + ... + 51634.

It is an arithmetic number, because the mean of its divisors is an integer number (3240090).

Almost surely, 2^21086095 is an apocalyptic number.

21086095 is a deficient number, since it is larger than the sum of its proper divisors (4834625).

21086095 is a wasteful number, since it uses less digits than its factorization.

21086095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102905.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 21086095 is about 4591.9598212528. The cubic root of 21086095 is about 276.2689346371.

The spelling of 21086095 in words is "twenty-one million, eighty-six thousand, ninety-five".