21422495 has 8 divisors (see below), whose sum is σ = 25823616. Its totient is φ = 17060256.

The previous prime is 21422483. The next prime is 21422501. The reversal of 21422495 is 59422412.

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

It is a cyclic number.

It is not a de Polignac number, because 21422495 - 2²⁰ = 20373919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8492 + ... + 10721.

It is an arithmetic number, because the mean of its divisors is an integer number (3227952).

Almost surely, 2^21422495 is an apocalyptic number.

21422495 is a deficient number, since it is larger than the sum of its proper divisors (4401121).

21422495 is a wasteful number, since it uses less digits than its factorization.

21422495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19441.

The product of its digits is 5760, while the sum is 29.

The square root of 21422495 is about 4628.4441230288. Note that the first 3 decimals coincide. The cubic root of 21422495 is about 277.7303554897.

The spelling of 21422495 in words is "twenty-one million, four hundred twenty-two thousand, four hundred ninety-five".