21095675 has 12 divisors (see below), whose sum is σ = 26222280. Its totient is φ = 16835520.

The previous prime is 21095663. The next prime is 21095677. The reversal of 21095675 is 57659012.

It is not a de Polignac number, because 21095675 - 2¹⁸ = 20833531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21095677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13484 + ... + 14966.

It is an arithmetic number, because the mean of its divisors is an integer number (2185190).

Almost surely, 2^21095675 is an apocalyptic number.

21095675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

21095675 is a deficient number, since it is larger than the sum of its proper divisors (5126605).

21095675 is a wasteful number, since it uses less digits than its factorization.

21095675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2062 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 21095675 is about 4593.0028303932. The cubic root of 21095675 is about 276.3107671920.

The spelling of 21095675 in words is "twenty-one million, ninety-five thousand, six hundred seventy-five".