22648451 has 4 divisors (see below), whose sum is σ = 25883952. Its totient is φ = 19412952.

The previous prime is 22648427. The next prime is 22648481. The reversal of 22648451 is 15484622.

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 22648451 - 2⁶ = 22648387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22648481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1617740 + ... + 1617753.

It is an arithmetic number, because the mean of its divisors is an integer number (6470988).

Almost surely, 2^22648451 is an apocalyptic number.

22648451 is a deficient number, since it is larger than the sum of its proper divisors (3235501).

22648451 is an equidigital number, since it uses as much as digits as its factorization.

22648451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3235500.

The product of its digits is 15360, while the sum is 32.

The square root of 22648451 is about 4759.0388735542. The cubic root of 22648451 is about 282.9303270071.

The spelling of 22648451 in words is "twenty-two million, six hundred forty-eight thousand, four hundred fifty-one".