21450795 has 16 divisors (see below), whose sum is σ = 34386720. Its totient is φ = 11418624.

The previous prime is 21450763. The next prime is 21450797. The reversal of 21450795 is 59705412.

It is not a de Polignac number, because 21450795 - 2⁵ = 21450763 is a prime.

It is a super-2 number, since 2×21450795² = 920273212264050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21450797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9627 + ... + 11643.

It is an arithmetic number, because the mean of its divisors is an integer number (2149170).

Almost surely, 2^21450795 is an apocalyptic number.

21450795 is a deficient number, since it is larger than the sum of its proper divisors (12935925).

21450795 is a wasteful number, since it uses less digits than its factorization.

21450795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734.

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 21450795 is about 4631.5002968801. The cubic root of 21450795 is about 277.8525994296.

The spelling of 21450795 in words is "twenty-one million, four hundred fifty thousand, seven hundred ninety-five".