91074227 has 12 divisors (see below), whose sum is σ = 96155640. Its totient is φ = 86246688.

The previous prime is 91074169. The next prime is 91074251. The reversal of 91074227 is 72247019.

It is not a de Polignac number, because 91074227 - 2¹⁸ = 90812083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91074193 and 91074202.

It is not an unprimeable number, because it can be changed into a prime (91074527) 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 11 ways as a sum of consecutive naturals, for example, 55799 + ... + 57407.

It is an arithmetic number, because the mean of its divisors is an integer number (8012970).

Almost surely, 2^91074227 is an apocalyptic number.

91074227 is a deficient number, since it is larger than the sum of its proper divisors (5081413).

91074227 is a wasteful number, since it uses less digits than its factorization.

91074227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762 (or 1739 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 91074227 is about 9543.2817730590. The cubic root of 91074227 is about 449.9164075180.

The spelling of 91074227 in words is "ninety-one million, seventy-four thousand, two hundred twenty-seven".