91050 has 24 divisors (see below), whose sum is σ = 226176. Its totient is φ = 24240.

The previous prime is 91033. The next prime is 91079. The reversal of 91050 is 5019.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154 + ... + 453.

It is an arithmetic number, because the mean of its divisors is an integer number (9424).

2⁹¹⁰⁵⁰ is an apocalyptic number.

91050 is an abundant number, since it is smaller than the sum of its proper divisors (135126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113088).

91050 is a wasteful number, since it uses less digits than its factorization.

91050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 91050 is about 301.7449253923. The cubic root of 91050 is about 44.9876509324.

Adding to 91050 its reverse (5019), we get a palindrome (96069).

The spelling of 91050 in words is "ninety-one thousand, fifty".