22801391 has 2 divisors, whose sum is σ = 22801392. Its totient is φ = 22801390.

The previous prime is 22801367. The next prime is 22801433. The reversal of 22801391 is 19310822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22801391 - 2⁶ = 22801327 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22801391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22801291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11400695 + 11400696.

It is an arithmetic number, because the mean of its divisors is an integer number (11400696).

Almost surely, 2^22801391 is an apocalyptic number.

22801391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22801391 is an equidigital number, since it uses as much as digits as its factorization.

22801391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 22801391 is about 4775.0802087504. The cubic root of 22801391 is about 283.5657542351.

The spelling of 22801391 in words is "twenty-two million, eight hundred one thousand, three hundred ninety-one".