91135450 has 24 divisors (see below), whose sum is σ = 193728672. Its totient is φ = 31246320.

The previous prime is 91135441. The next prime is 91135501. The reversal of 91135450 is 5453119.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 129844 + ... + 130543.

It is an arithmetic number, because the mean of its divisors is an integer number (8072028).

Almost surely, 2^91135450 is an apocalyptic number.

91135450 is an abundant number, since it is smaller than the sum of its proper divisors (102593222).

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

91135450 is a wasteful number, since it uses less digits than its factorization.

91135450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260406 (or 260401 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 91135450 is about 9546.4888833539. The cubic root of 91135450 is about 450.0172009886.

Adding to 91135450 its reverse (5453119), we get a palindrome (96588569).

The spelling of 91135450 in words is "ninety-one million, one hundred thirty-five thousand, four hundred fifty".