22226451 has 16 divisors (see below), whose sum is σ = 32520096. Its totient is φ = 13418496.

The previous prime is 22226437. The next prime is 22226453. The reversal of 22226451 is 15462222.

It is a happy number.

It is not a de Polignac number, because 22226451 - 2⁵ = 22226419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22226453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3310 + ... + 7443.

It is an arithmetic number, because the mean of its divisors is an integer number (2032506).

Almost surely, 2^22226451 is an apocalyptic number.

22226451 is a deficient number, since it is larger than the sum of its proper divisors (10293645).

22226451 is a wasteful number, since it uses less digits than its factorization.

22226451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10822.

The product of its digits is 1920, while the sum is 24.

The square root of 22226451 is about 4714.4937161905. The cubic root of 22226451 is about 281.1620540827.

Adding to 22226451 its reverse (15462222), we get a palindrome (37688673).

The spelling of 22226451 in words is "twenty-two million, two hundred twenty-six thousand, four hundred fifty-one".