91825159 has 2 divisors, whose sum is σ = 91825160. Its totient is φ = 91825158.

The previous prime is 91825121. The next prime is 91825163. The reversal of 91825159 is 95152819.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91825159 - 2⁹ = 91824647 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 (91825259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45912579 + 45912580.

It is an arithmetic number, because the mean of its divisors is an integer number (45912580).

Almost surely, 2^91825159 is an apocalyptic number.

91825159 is a deficient number, since it is larger than the sum of its proper divisors (1).

91825159 is an equidigital number, since it uses as much as digits as its factorization.

91825159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 40.

The square root of 91825159 is about 9582.5444950702. The cubic root of 91825159 is about 451.1495858297.

It can be divided in two parts, 9182 and 5159, that added together give a palindrome (14341).

The spelling of 91825159 in words is "ninety-one million, eight hundred twenty-five thousand, one hundred fifty-nine".