91074550 has 24 divisors (see below), whose sum is σ = 193599216. Its totient is φ = 31225440.

The previous prime is 91074547. The next prime is 91074551. The reversal of 91074550 is 5547019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91074551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 129757 + ... + 130456.

It is an arithmetic number, because the mean of its divisors is an integer number (8066634).

Almost surely, 2^91074550 is an apocalyptic number.

91074550 is an abundant number, since it is smaller than the sum of its proper divisors (102524666).

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

91074550 is a wasteful number, since it uses less digits than its factorization.

91074550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260232 (or 260227 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 31.

The square root of 91074550 is about 9543.2986959437. The cubic root of 91074550 is about 449.9169394022.

The spelling of 91074550 in words is "ninety-one million, seventy-four thousand, five hundred fifty".