22485391 has 2 divisors, whose sum is σ = 22485392. Its totient is φ = 22485390.

The previous prime is 22485371. The next prime is 22485427. The reversal of 22485391 is 19358422.

22485391 is nontrivially palindromic in base 12.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22485391 - 2⁷ = 22485263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22485371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11242695 + 11242696.

It is an arithmetic number, because the mean of its divisors is an integer number (11242696).

Almost surely, 2^22485391 is an apocalyptic number.

22485391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22485391 is an equidigital number, since it uses as much as digits as its factorization.

22485391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 34.

The square root of 22485391 is about 4741.8763163963. The cubic root of 22485391 is about 282.2496950118.

The spelling of 22485391 in words is "twenty-two million, four hundred eighty-five thousand, three hundred ninety-one".