491061227 has 2 divisors, whose sum is σ = 491061228. Its totient is φ = 491061226.

The previous prime is 491061209. The next prime is 491061281. The reversal of 491061227 is 722160194.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 491061227 - 2¹⁰ = 491060203 is a prime.

It is a super-2 number, since 2×491061227² = 482282257325491058, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 491061193 and 491061202.

It is not a weakly prime, because it can be changed into another prime (491061127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245530613 + 245530614.

It is an arithmetic number, because the mean of its divisors is an integer number (245530614).

Almost surely, 2^491061227 is an apocalyptic number.

491061227 is a deficient number, since it is larger than the sum of its proper divisors (1).

491061227 is an equidigital number, since it uses as much as digits as its factorization.

491061227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 491061227 is about 22159.9013310078. The cubic root of 491061227 is about 788.9422510011.

The spelling of 491061227 in words is "four hundred ninety-one million, sixty-one thousand, two hundred twenty-seven".