22576421 has 4 divisors (see below), whose sum is σ = 25801632. Its totient is φ = 19351212.

The previous prime is 22576417. The next prime is 22576447. The reversal of 22576421 is 12467522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12467522 = 2 ⋅6233761.

It is a cyclic number.

It is not a de Polignac number, because 22576421 - 2² = 22576417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22576451) by changing a digit.

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, 1612595 + ... + 1612608.

It is an arithmetic number, because the mean of its divisors is an integer number (6450408).

Almost surely, 2^22576421 is an apocalyptic number.

It is an amenable number.

22576421 is a deficient number, since it is larger than the sum of its proper divisors (3225211).

22576421 is an equidigital number, since it uses as much as digits as its factorization.

22576421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3225210.

The product of its digits is 6720, while the sum is 29.

The square root of 22576421 is about 4751.4651424587. The cubic root of 22576421 is about 282.6300693232.

The spelling of 22576421 in words is "twenty-two million, five hundred seventy-six thousand, four hundred twenty-one".