22231451 has 12 divisors (see below), whose sum is σ = 24556056. Its totient is φ = 20111520.

The previous prime is 22231441. The next prime is 22231459. The reversal of 22231451 is 15413222.

It is not a de Polignac number, because 22231451 - 2²² = 18037147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22231459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37580 + ... + 38166.

It is an arithmetic number, because the mean of its divisors is an integer number (2046338).

Almost surely, 2^22231451 is an apocalyptic number.

22231451 is a deficient number, since it is larger than the sum of its proper divisors (2324605).

22231451 is a wasteful number, since it uses less digits than its factorization.

22231451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922 (or 911 counting only the distinct ones).

The product of its digits is 480, while the sum is 20.

The square root of 22231451 is about 4715.0239660048. The cubic root of 22231451 is about 281.1831356440.

Adding to 22231451 its reverse (15413222), we get a palindrome (37644673).

The spelling of 22231451 in words is "twenty-two million, two hundred thirty-one thousand, four hundred fifty-one".