22154452 has 12 divisors (see below), whose sum is σ = 38816820. Its totient is φ = 11063936.

The previous prime is 22154449. The next prime is 22154459. The reversal of 22154452 is 25445122.

It can be written as a sum of positive squares in 2 ways, for example, as 13883076 + 8271376 = 3726^2 + 2876^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154459) 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, 1074 + ... + 6742.

It is an arithmetic number, because the mean of its divisors is an integer number (3234735).

Almost surely, 2^22154452 is an apocalyptic number.

It is an amenable number.

22154452 is a deficient number, since it is larger than the sum of its proper divisors (16662368).

22154452 is a wasteful number, since it uses less digits than its factorization.

22154452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6650 (or 6648 counting only the distinct ones).

The product of its digits is 3200, while the sum is 25.

The square root of 22154452 is about 4706.8516016548. The cubic root of 22154452 is about 280.8581326492.

Adding to 22154452 its reverse (25445122), we get a palindrome (47599574).

The spelling of 22154452 in words is "twenty-two million, one hundred fifty-four thousand, four hundred fifty-two".