20506327 has 2 divisors, whose sum is σ = 20506328. Its totient is φ = 20506326.

The previous prime is 20506319. The next prime is 20506331. The reversal of 20506327 is 72360502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20506327 - 2³ = 20506319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20506337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10253163 + 10253164.

It is an arithmetic number, because the mean of its divisors is an integer number (10253164).

Almost surely, 2^20506327 is an apocalyptic number.

20506327 is a deficient number, since it is larger than the sum of its proper divisors (1).

20506327 is an equidigital number, since it uses as much as digits as its factorization.

20506327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 20506327 is about 4528.3912154318. The cubic root of 20506327 is about 273.7133370414.

Adding to 20506327 its reverse (72360502), we get a palindrome (92866829).

The spelling of 20506327 in words is "twenty million, five hundred six thousand, three hundred twenty-seven".