20027291 has 2 divisors, whose sum is σ = 20027292. Its totient is φ = 20027290.

The previous prime is 20027263. The next prime is 20027317. The reversal of 20027291 is 19272002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20027291 - 2¹⁰ = 20026267 is a prime.

It is not a weakly prime, because it can be changed into another prime (20027221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10013645 + 10013646.

It is an arithmetic number, because the mean of its divisors is an integer number (10013646).

Almost surely, 2^20027291 is an apocalyptic number.

20027291 is a deficient number, since it is larger than the sum of its proper divisors (1).

20027291 is an equidigital number, since it uses as much as digits as its factorization.

20027291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 20027291 is about 4475.1861413800. The cubic root of 20027291 is about 271.5651708291.

Adding to 20027291 its reverse (19272002), we get a palindrome (39299293).

The spelling of 20027291 in words is "twenty million, twenty-seven thousand, two hundred ninety-one".