91650227 has 2 divisors, whose sum is σ = 91650228. Its totient is φ = 91650226.

The previous prime is 91650199. The next prime is 91650257. The reversal of 91650227 is 72205619.

It is a weak prime.

It is an emirp because it is prime and its reverse (72205619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91650227 - 2¹² = 91646131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91650193 and 91650202.

It is not a weakly prime, because it can be changed into another prime (91650257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45825113 + 45825114.

It is an arithmetic number, because the mean of its divisors is an integer number (45825114).

Almost surely, 2^91650227 is an apocalyptic number.

91650227 is a deficient number, since it is larger than the sum of its proper divisors (1).

91650227 is an equidigital number, since it uses as much as digits as its factorization.

91650227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 91650227 is about 9573.4125054758. The cubic root of 91650227 is about 450.8629154179.

The spelling of 91650227 in words is "ninety-one million, six hundred fifty thousand, two hundred twenty-seven".