22057393 has 2 divisors, whose sum is σ = 22057394. Its totient is φ = 22057392.

The previous prime is 22057369. The next prime is 22057397. The reversal of 22057393 is 39375022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17164449 + 4892944 = 4143^2 + 2212^2 .

It is a cyclic number.

It is not a de Polignac number, because 22057393 - 2¹³ = 22049201 is a prime.

It is equal to p_1392691 and since 22057393 and 1392691 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22057397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11028696 + 11028697.

It is an arithmetic number, because the mean of its divisors is an integer number (11028697).

Almost surely, 2^22057393 is an apocalyptic number.

It is an amenable number.

22057393 is a deficient number, since it is larger than the sum of its proper divisors (1).

22057393 is an equidigital number, since it uses as much as digits as its factorization.

22057393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 31.

The square root of 22057393 is about 4696.5298891841. The cubic root of 22057393 is about 280.4473842780.

The spelling of 22057393 in words is "twenty-two million, fifty-seven thousand, three hundred ninety-three".