22528811 has 2 divisors, whose sum is σ = 22528812. Its totient is φ = 22528810.

The previous prime is 22528789. The next prime is 22528823. The reversal of 22528811 is 11882522.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22528811 is a prime.

It is not a weakly prime, because it can be changed into another prime (22528841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11264405 + 11264406.

It is an arithmetic number, because the mean of its divisors is an integer number (11264406).

Almost surely, 2^22528811 is an apocalyptic number.

22528811 is a deficient number, since it is larger than the sum of its proper divisors (1).

22528811 is an equidigital number, since it uses as much as digits as its factorization.

22528811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2560, while the sum is 29.

The square root of 22528811 is about 4746.4524647362. The cubic root of 22528811 is about 282.4312558864.

The spelling of 22528811 in words is "twenty-two million, five hundred twenty-eight thousand, eight hundred eleven".