22540811 has 2 divisors, whose sum is σ = 22540812. Its totient is φ = 22540810.

The previous prime is 22540799. The next prime is 22540823. The reversal of 22540811 is 11804522.

It is a balanced prime because it is at equal distance from previous prime (22540799) and next prime (22540823).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22540811 is a prime.

It is a Chen prime.

It is equal to p_1421078 and since 22540811 and 1421078 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22540411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11270405 + 11270406.

It is an arithmetic number, because the mean of its divisors is an integer number (11270406).

Almost surely, 2^22540811 is an apocalyptic number.

22540811 is a deficient number, since it is larger than the sum of its proper divisors (1).

22540811 is an equidigital number, since it uses as much as digits as its factorization.

22540811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 22540811 is about 4747.7163984383. The cubic root of 22540811 is about 282.4813927755.

The spelling of 22540811 in words is "twenty-two million, five hundred forty thousand, eight hundred eleven".