22137859 has 4 divisors (see below), whose sum is σ = 23440104. Its totient is φ = 20835616.

The previous prime is 22137851. The next prime is 22137881. The reversal of 22137859 is 95873122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95873122 = 2 ⋅47936561.

It is a cyclic number.

It is not a de Polignac number, because 22137859 - 2³ = 22137851 is a prime.

It is a super-2 number, since 2×22137859² = 980169602207762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22137851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651097 + ... + 651130.

It is an arithmetic number, because the mean of its divisors is an integer number (5860026).

Almost surely, 2^22137859 is an apocalyptic number.

22137859 is a deficient number, since it is larger than the sum of its proper divisors (1302245).

22137859 is a wasteful number, since it uses less digits than its factorization.

22137859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302244.

The product of its digits is 30240, while the sum is 37.

The square root of 22137859 is about 4705.0886282832. The cubic root of 22137859 is about 280.7879971155.

The spelling of 22137859 in words is "twenty-two million, one hundred thirty-seven thousand, eight hundred fifty-nine".