22540319 has 2 divisors, whose sum is σ = 22540320. Its totient is φ = 22540318.

The previous prime is 22540237. The next prime is 22540339. The reversal of 22540319 is 91304522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22540319 is a prime.

It is a super-2 number, since 2×22540319² = 1016131961243522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22540339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11270159 + 11270160.

It is an arithmetic number, because the mean of its divisors is an integer number (11270160).

Almost surely, 2^22540319 is an apocalyptic number.

22540319 is a deficient number, since it is larger than the sum of its proper divisors (1).

22540319 is an equidigital number, since it uses as much as digits as its factorization.

22540319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 22540319 is about 4747.6645837717. The cubic root of 22540319 is about 282.4793375129.

The spelling of 22540319 in words is "twenty-two million, five hundred forty thousand, three hundred nineteen".