20056259 has 2 divisors, whose sum is σ = 20056260. Its totient is φ = 20056258.

The previous prime is 20056247. The next prime is 20056291. The reversal of 20056259 is 95265002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20056259 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20056459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10028129 + 10028130.

It is an arithmetic number, because the mean of its divisors is an integer number (10028130).

Almost surely, 2^20056259 is an apocalyptic number.

20056259 is a deficient number, since it is larger than the sum of its proper divisors (1).

20056259 is an equidigital number, since it uses as much as digits as its factorization.

20056259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 20056259 is about 4478.4214853004. The cubic root of 20056259 is about 271.6960407514.

The spelling of 20056259 in words is "twenty million, fifty-six thousand, two hundred fifty-nine".