22013791 has 2 divisors, whose sum is σ = 22013792. Its totient is φ = 22013790.

The previous prime is 22013777. The next prime is 22013809. The reversal of 22013791 is 19731022.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22013791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22013701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11006895 + 11006896.

It is an arithmetic number, because the mean of its divisors is an integer number (11006896).

Almost surely, 2^22013791 is an apocalyptic number.

22013791 is a deficient number, since it is larger than the sum of its proper divisors (1).

22013791 is an equidigital number, since it uses as much as digits as its factorization.

22013791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 22013791 is about 4691.8856550432. The cubic root of 22013791 is about 280.2624707210.

The spelling of 22013791 in words is "twenty-two million, thirteen thousand, seven hundred ninety-one".