20993059 has 2 divisors, whose sum is σ = 20993060. Its totient is φ = 20993058.

The previous prime is 20993047. The next prime is 20993083. The reversal of 20993059 is 95039902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20993059 - 2¹⁹ = 20468771 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20993009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10496529 + 10496530.

It is an arithmetic number, because the mean of its divisors is an integer number (10496530).

Almost surely, 2^20993059 is an apocalyptic number.

20993059 is a deficient number, since it is larger than the sum of its proper divisors (1).

20993059 is an equidigital number, since it uses as much as digits as its factorization.

20993059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 20993059 is about 4581.8183071789. The cubic root of 20993059 is about 275.8620179510.

The spelling of 20993059 in words is "twenty million, nine hundred ninety-three thousand, fifty-nine".