22097477 has 2 divisors, whose sum is σ = 22097478. Its totient is φ = 22097476.

The previous prime is 22097459. The next prime is 22097479. The reversal of 22097477 is 77479022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15952036 + 6145441 = 3994^2 + 2479^2 .

It is a cyclic number.

It is not a de Polignac number, because 22097477 - 2¹² = 22093381 is a prime.

Together with 22097479, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22097477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22097479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11048738 + 11048739.

It is an arithmetic number, because the mean of its divisors is an integer number (11048739).

Almost surely, 2^22097477 is an apocalyptic number.

It is an amenable number.

22097477 is a deficient number, since it is larger than the sum of its proper divisors (1).

22097477 is an equidigital number, since it uses as much as digits as its factorization.

22097477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 22097477 is about 4700.7953582346. The cubic root of 22097477 is about 280.6171633369.

The spelling of 22097477 in words is "twenty-two million, ninety-seven thousand, four hundred seventy-seven".