84117151 has 2 divisors, whose sum is σ = 84117152. Its totient is φ = 84117150.

The previous prime is 84117133. The next prime is 84117157. The reversal of 84117151 is 15171148.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84117151 - 2¹¹ = 84115103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84117157) 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, 42058575 + 42058576.

It is an arithmetic number, because the mean of its divisors is an integer number (42058576).

Almost surely, 2^84117151 is an apocalyptic number.

84117151 is a deficient number, since it is larger than the sum of its proper divisors (1).

84117151 is an equidigital number, since it uses as much as digits as its factorization.

84117151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1120, while the sum is 28.

The square root of 84117151 is about 9171.5402741306. The cubic root of 84117151 is about 438.1554166535.

Adding to 84117151 its reverse (15171148), we get a palindrome (99288299).

The spelling of 84117151 in words is "eighty-four million, one hundred seventeen thousand, one hundred fifty-one".