22140577 has 2 divisors, whose sum is σ = 22140578. Its totient is φ = 22140576.

The previous prime is 22140557. The next prime is 22140581. The reversal of 22140577 is 77504122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18740241 + 3400336 = 4329^2 + 1844^2 .

It is a cyclic number.

It is not a de Polignac number, because 22140577 - 2⁷ = 22140449 is a prime.

It is not a weakly prime, because it can be changed into another prime (22140527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11070288 + 11070289.

It is an arithmetic number, because the mean of its divisors is an integer number (11070289).

Almost surely, 2^22140577 is an apocalyptic number.

It is an amenable number.

22140577 is a deficient number, since it is larger than the sum of its proper divisors (1).

22140577 is an equidigital number, since it uses as much as digits as its factorization.

22140577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3920, while the sum is 28.

The square root of 22140577 is about 4705.3774556352. The cubic root of 22140577 is about 280.7994879970.

Adding to 22140577 its reverse (77504122), we get a palindrome (99644699).

The spelling of 22140577 in words is "twenty-two million, one hundred forty thousand, five hundred seventy-seven".