20794559 has 2 divisors, whose sum is σ = 20794560. Its totient is φ = 20794558.

The previous prime is 20794549. The next prime is 20794573. The reversal of 20794559 is 95549702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20794559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20794549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10397279 + 10397280.

It is an arithmetic number, because the mean of its divisors is an integer number (10397280).

Almost surely, 2^20794559 is an apocalyptic number.

20794559 is a deficient number, since it is larger than the sum of its proper divisors (1).

20794559 is an equidigital number, since it uses as much as digits as its factorization.

20794559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 20794559 is about 4560.1051522964. The cubic root of 20794559 is about 274.9897913566.

The spelling of 20794559 in words is "twenty million, seven hundred ninety-four thousand, five hundred fifty-nine".