91119151 has 4 divisors (see below), whose sum is σ = 91150600. Its totient is φ = 91087704.

The previous prime is 91119139. The next prime is 91119157. The reversal of 91119151 is 15191119.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91119151 - 2¹³ = 91110959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91119157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10881 + ... + 17338.

It is an arithmetic number, because the mean of its divisors is an integer number (22787650).

Almost surely, 2^91119151 is an apocalyptic number.

91119151 is a deficient number, since it is larger than the sum of its proper divisors (31449).

91119151 is a wasteful number, since it uses less digits than its factorization.

91119151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31448.

The product of its digits is 405, while the sum is 28.

The square root of 91119151 is about 9545.6351805419. The cubic root of 91119151 is about 449.9903718105.

The spelling of 91119151 in words is "ninety-one million, one hundred nineteen thousand, one hundred fifty-one".