22423451 has 4 divisors (see below), whose sum is σ = 22521600. Its totient is φ = 22325304.

The previous prime is 22423441. The next prime is 22423463. The reversal of 22423451 is 15432422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22423451 is a prime.

It is a super-2 number, since 2×22423451² = 1005622309498802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22423441) 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, 48731 + ... + 49188.

It is an arithmetic number, because the mean of its divisors is an integer number (5630400).

Almost surely, 2^22423451 is an apocalyptic number.

22423451 is a deficient number, since it is larger than the sum of its proper divisors (98149).

22423451 is an equidigital number, since it uses as much as digits as its factorization.

22423451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98148.

The product of its digits is 1920, while the sum is 23.

The square root of 22423451 is about 4735.3406424459. The cubic root of 22423451 is about 281.9902877127.

Adding to 22423451 its reverse (15432422), we get a palindrome (37855873).

The spelling of 22423451 in words is "twenty-two million, four hundred twenty-three thousand, four hundred fifty-one".