20116087 has 2 divisors, whose sum is σ = 20116088. Its totient is φ = 20116086.

The previous prime is 20116073. The next prime is 20116093. The reversal of 20116087 is 78061102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20116087 is a prime.

It is equal to p_1277530 and since 20116087 and 1277530 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20116067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10058043 + 10058044.

It is an arithmetic number, because the mean of its divisors is an integer number (10058044).

Almost surely, 2^20116087 is an apocalyptic number.

20116087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20116087 is an equidigital number, since it uses as much as digits as its factorization.

20116087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 20116087 is about 4485.0960970753. The cubic root of 20116087 is about 271.9659298084.

Adding to 20116087 its reverse (78061102), we get a palindrome (98177189).

The spelling of 20116087 in words is "twenty million, one hundred sixteen thousand, eighty-seven".