87163211 has 2 divisors, whose sum is σ = 87163212. Its totient is φ = 87163210.

The previous prime is 87163187. The next prime is 87163273. The reversal of 87163211 is 11236178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87163211 - 2²⁶ = 20054347 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87163511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43581605 + 43581606.

It is an arithmetic number, because the mean of its divisors is an integer number (43581606).

Almost surely, 2^87163211 is an apocalyptic number.

87163211 is a deficient number, since it is larger than the sum of its proper divisors (1).

87163211 is an equidigital number, since it uses as much as digits as its factorization.

87163211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 87163211 is about 9336.1239816104. The cubic root of 87163211 is about 443.3816755596.

Adding to 87163211 its reverse (11236178), we get a palindrome (98399389).

The spelling of 87163211 in words is "eighty-seven million, one hundred sixty-three thousand, two hundred eleven".