22561751 has 2 divisors, whose sum is σ = 22561752. Its totient is φ = 22561750.

The previous prime is 22561733. The next prime is 22561783. The reversal of 22561751 is 15716522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22561751 - 2⁶ = 22561687 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22561051) 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, 11280875 + 11280876.

It is an arithmetic number, because the mean of its divisors is an integer number (11280876).

Almost surely, 2^22561751 is an apocalyptic number.

22561751 is a deficient number, since it is larger than the sum of its proper divisors (1).

22561751 is an equidigital number, since it uses as much as digits as its factorization.

22561751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 22561751 is about 4749.9211572404. The cubic root of 22561751 is about 282.5688390468.

The spelling of 22561751 in words is "twenty-two million, five hundred sixty-one thousand, seven hundred fifty-one".