22451117 has 8 divisors (see below), whose sum is σ = 24741024. Its totient is φ = 20241648.

The previous prime is 22451087. The next prime is 22451129. The reversal of 22451117 is 71115422.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22451117 - 2⁶ = 22451053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22451092 and 22451101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22451147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19523 + ... + 20640.

It is an arithmetic number, because the mean of its divisors is an integer number (3092628).

Almost surely, 2^22451117 is an apocalyptic number.

It is an amenable number.

22451117 is a deficient number, since it is larger than the sum of its proper divisors (2289907).

22451117 is a wasteful number, since it uses less digits than its factorization.

22451117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40219.

The product of its digits is 560, while the sum is 23.

The square root of 22451117 is about 4738.2609679080. The cubic root of 22451117 is about 282.1062130296.

Adding to 22451117 its reverse (71115422), we get a palindrome (93566539).

The spelling of 22451117 in words is "twenty-two million, four hundred fifty-one thousand, one hundred seventeen".