20110087 has 2 divisors, whose sum is σ = 20110088. Its totient is φ = 20110086.

The previous prime is 20110043. The next prime is 20110109. The reversal of 20110087 is 78001102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055043 + 10055044.

It is an arithmetic number, because the mean of its divisors is an integer number (10055044).

Almost surely, 2^20110087 is an apocalyptic number.

20110087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110087 is an equidigital number, since it uses as much as digits as its factorization.

20110087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 20110087 is about 4484.4271652018. The cubic root of 20110087 is about 271.9388874742.

Adding to 20110087 its reverse (78001102), we get a palindrome (98111189).

It can be divided in two parts, 2011008 and 7, that added together give a triangular number (2011015 = T₂₀₀₅).

The spelling of 20110087 in words is "twenty million, one hundred ten thousand, eighty-seven".