22254145 has 4 divisors (see below), whose sum is σ = 26704980. Its totient is φ = 17803312.

The previous prime is 22254121. The next prime is 22254157. The reversal of 22254145 is 54145222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14318656 + 7935489 = 3784^2 + 2817^2 .

It is a cyclic number.

It is not a de Polignac number, because 22254145 - 2⁷ = 22254017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2225410 + ... + 2225419.

It is an arithmetic number, because the mean of its divisors is an integer number (6676245).

Almost surely, 2^22254145 is an apocalyptic number.

It is an amenable number.

22254145 is a deficient number, since it is larger than the sum of its proper divisors (4450835).

22254145 is an equidigital number, since it uses as much as digits as its factorization.

22254145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4450834.

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

The square root of 22254145 is about 4717.4299146887. The cubic root of 22254145 is about 281.2787809230.

Adding to 22254145 its reverse (54145222), we get a palindrome (76399367).

The spelling of 22254145 in words is "twenty-two million, two hundred fifty-four thousand, one hundred forty-five".