22549997 has 8 divisors (see below), whose sum is σ = 22924800. Its totient is φ = 22177584.

The previous prime is 22549987. The next prime is 22550009. The reversal of 22549997 is 79994522.

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

It is a cyclic number.

It is not a de Polignac number, because 22549997 - 2⁴ = 22549981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22549957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31004 + ... + 31722.

It is an arithmetic number, because the mean of its divisors is an integer number (2865600).

Almost surely, 2^22549997 is an apocalyptic number.

It is an amenable number.

22549997 is a deficient number, since it is larger than the sum of its proper divisors (374803).

22549997 is an equidigital number, since it uses as much as digits as its factorization.

22549997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195.

The product of its digits is 408240, while the sum is 47.

The square root of 22549997 is about 4748.6837123565. The cubic root of 22549997 is about 282.5197605411.

The spelling of 22549997 in words is "twenty-two million, five hundred forty-nine thousand, nine hundred ninety-seven".