91154227 has 2 divisors, whose sum is σ = 91154228. Its totient is φ = 91154226.

The previous prime is 91154201. The next prime is 91154243. The reversal of 91154227 is 72245119.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91154227 - 2⁷ = 91154099 is a prime.

It is not a weakly prime, because it can be changed into another prime (91154257) 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 as a sum of consecutive naturals, namely, 45577113 + 45577114.

It is an arithmetic number, because the mean of its divisors is an integer number (45577114).

Almost surely, 2^91154227 is an apocalyptic number.

91154227 is a deficient number, since it is larger than the sum of its proper divisors (1).

91154227 is an equidigital number, since it uses as much as digits as its factorization.

91154227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 31.

The square root of 91154227 is about 9547.4722832800. The cubic root of 91154227 is about 450.0481051454.

The spelling of 91154227 in words is "ninety-one million, one hundred fifty-four thousand, two hundred twenty-seven".