20045371 has 2 divisors, whose sum is σ = 20045372. Its totient is φ = 20045370.

The previous prime is 20045339. The next prime is 20045387. The reversal of 20045371 is 17354002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20045371 - 2⁵ = 20045339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20045321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10022685 + 10022686.

It is an arithmetic number, because the mean of its divisors is an integer number (10022686).

Almost surely, 2^20045371 is an apocalyptic number.

20045371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20045371 is an equidigital number, since it uses as much as digits as its factorization.

20045371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 20045371 is about 4477.2057133887. The cubic root of 20045371 is about 271.6468663770.

Adding to 20045371 its reverse (17354002), we get a palindrome (37399373).

The spelling of 20045371 in words is "twenty million, forty-five thousand, three hundred seventy-one".