22688551 has 2 divisors, whose sum is σ = 22688552. Its totient is φ = 22688550.

The previous prime is 22688521. The next prime is 22688581. The reversal of 22688551 is 15588622.

It is a balanced prime because it is at equal distance from previous prime (22688521) and next prime (22688581).

It is a cyclic number.

It is not a de Polignac number, because 22688551 - 2¹⁵ = 22655783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22688551.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22688521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11344275 + 11344276.

It is an arithmetic number, because the mean of its divisors is an integer number (11344276).

Almost surely, 2^22688551 is an apocalyptic number.

22688551 is a deficient number, since it is larger than the sum of its proper divisors (1).

22688551 is an equidigital number, since it uses as much as digits as its factorization.

22688551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 37.

The square root of 22688551 is about 4763.2500459245. The cubic root of 22688551 is about 283.0972084243.

The spelling of 22688551 in words is "twenty-two million, six hundred eighty-eight thousand, five hundred fifty-one".