91354187 has 2 divisors, whose sum is σ = 91354188. Its totient is φ = 91354186.

The previous prime is 91354181. The next prime is 91354201. The reversal of 91354187 is 78145319.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91354187 - 2¹⁴ = 91337803 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91354187.

It is not a weakly prime, because it can be changed into another prime (91354181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45677093 + 45677094.

It is an arithmetic number, because the mean of its divisors is an integer number (45677094).

Almost surely, 2^91354187 is an apocalyptic number.

91354187 is a deficient number, since it is larger than the sum of its proper divisors (1).

91354187 is an equidigital number, since it uses as much as digits as its factorization.

91354187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 91354187 is about 9557.9384283432. The cubic root of 91354187 is about 450.3769467103.

The spelling of 91354187 in words is "ninety-one million, three hundred fifty-four thousand, one hundred eighty-seven".