22454217 has 6 divisors (see below), whose sum is σ = 32433882. Its totient is φ = 14969472.

The previous prime is 22454197. The next prime is 22454221. The reversal of 22454217 is 71245422.

It can be written as a sum of positive squares in only one way, i.e., 19395216 + 3059001 = 4404^2 + 1749^2 .

It is not a de Polignac number, because 22454217 - 2¹² = 22450121 is a prime.

It is a super-2 number, since 2×22454217² = 1008383722166178, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22454617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1247448 + ... + 1247465.

It is an arithmetic number, because the mean of its divisors is an integer number (5405647).

Almost surely, 2^22454217 is an apocalyptic number.

It is an amenable number.

22454217 is a deficient number, since it is larger than the sum of its proper divisors (9979665).

22454217 is a wasteful number, since it uses less digits than its factorization.

22454217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2494919 (or 2494916 counting only the distinct ones).

The product of its digits is 4480, while the sum is 27.

The square root of 22454217 is about 4738.5880808528. The cubic root of 22454217 is about 282.1191966303.

Adding to 22454217 its reverse (71245422), we get a palindrome (93699639).

The spelling of 22454217 in words is "twenty-two million, four hundred fifty-four thousand, two hundred seventeen".