21463795 has 4 divisors (see below), whose sum is σ = 25756560. Its totient is φ = 17171032.

The previous prime is 21463777. The next prime is 21463801. The reversal of 21463795 is 59736412.

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 21463795 - 2⁷ = 21463667 is a prime.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2146375 + ... + 2146384.

It is an arithmetic number, because the mean of its divisors is an integer number (6439140).

Almost surely, 2^21463795 is an apocalyptic number.

21463795 is a deficient number, since it is larger than the sum of its proper divisors (4292765).

21463795 is an equidigital number, since it uses as much as digits as its factorization.

21463795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4292764.

The product of its digits is 45360, while the sum is 37.

The square root of 21463795 is about 4632.9035172341. The cubic root of 21463795 is about 277.9087178524.

It can be divided in two parts, 214 and 63795, that added together give a square (64009 = 253²).

The spelling of 21463795 in words is "twenty-one million, four hundred sixty-three thousand, seven hundred ninety-five".