22137897 has 8 divisors (see below), whose sum is σ = 29568256. Its totient is φ = 14733072.

The previous prime is 22137889. The next prime is 22137931. The reversal of 22137897 is 79873122.

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

It is not a de Polignac number, because 22137897 - 2³ = 22137889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22137197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4258 + ... + 7899.

It is an arithmetic number, because the mean of its divisors is an integer number (3696032).

Almost surely, 2^22137897 is an apocalyptic number.

It is an amenable number.

22137897 is a deficient number, since it is larger than the sum of its proper divisors (7430359).

22137897 is a wasteful number, since it uses less digits than its factorization.

22137897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12767.

The product of its digits is 42336, while the sum is 39.

The square root of 22137897 is about 4705.0926664626. The cubic root of 22137897 is about 280.7881577745.

The spelling of 22137897 in words is "twenty-two million, one hundred thirty-seven thousand, eight hundred ninety-seven".