20580433 has 2 divisors, whose sum is σ = 20580434. Its totient is φ = 20580432.

The previous prime is 20580419. The next prime is 20580437. The reversal of 20580433 is 33408502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12475024 + 8105409 = 3532^2 + 2847^2 .

It is a cyclic number.

It is not a de Polignac number, because 20580433 - 2¹³ = 20572241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20580398 and 20580407.

It is not a weakly prime, because it can be changed into another prime (20580437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10290216 + 10290217.

It is an arithmetic number, because the mean of its divisors is an integer number (10290217).

Almost surely, 2^20580433 is an apocalyptic number.

It is an amenable number.

20580433 is a deficient number, since it is larger than the sum of its proper divisors (1).

20580433 is an equidigital number, since it uses as much as digits as its factorization.

20580433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20580433 is about 4536.5662124563. The cubic root of 20580433 is about 274.0426567932.

Adding to 20580433 its reverse (33408502), we get a palindrome (53988935).

The spelling of 20580433 in words is "twenty million, five hundred eighty thousand, four hundred thirty-three".