91150 has 12 divisors (see below), whose sum is σ = 169632. Its totient is φ = 36440.

The previous prime is 91141. The next prime is 91151. The reversal of 91150 is 5119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91151) by changing a digit.

91150 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 862 + ... + 961.

It is an arithmetic number, because the mean of its divisors is an integer number (14136).

2⁹¹¹⁵⁰ is an apocalyptic number.

91150 is a deficient number, since it is larger than the sum of its proper divisors (78482).

91150 is a wasteful number, since it uses less digits than its factorization.

91150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1830 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 91150 is about 301.9105827890. The cubic root of 91150 is about 45.0041148501.

Adding to 91150 its reverse (5119), we get a palindrome (96269).

It can be divided in two parts, 911 and 50, that added together give a square (961 = 31²).

The spelling of 91150 in words is "ninety-one thousand, one hundred fifty".