20573291 has 2 divisors, whose sum is σ = 20573292. Its totient is φ = 20573290.

The previous prime is 20573269. The next prime is 20573303. The reversal of 20573291 is 19237502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20573291 - 2⁶ = 20573227 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20578291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10286645 + 10286646.

It is an arithmetic number, because the mean of its divisors is an integer number (10286646).

Almost surely, 2^20573291 is an apocalyptic number.

20573291 is a deficient number, since it is larger than the sum of its proper divisors (1).

20573291 is an equidigital number, since it uses as much as digits as its factorization.

20573291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 20573291 is about 4535.7789849154. The cubic root of 20573291 is about 274.0109529072.

The spelling of 20573291 in words is "twenty million, five hundred seventy-three thousand, two hundred ninety-one".