491214571 has 2 divisors, whose sum is σ = 491214572. Its totient is φ = 491214570.

The previous prime is 491214539. The next prime is 491214601. The reversal of 491214571 is 175412194.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 491214571 - 2⁵ = 491214539 is a prime.

It is a super-3 number, since 3×491214571³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (491211571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245607285 + 245607286.

It is an arithmetic number, because the mean of its divisors is an integer number (245607286).

Almost surely, 2^491214571 is an apocalyptic number.

491214571 is a deficient number, since it is larger than the sum of its proper divisors (1).

491214571 is an equidigital number, since it uses as much as digits as its factorization.

491214571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 491214571 is about 22163.3610041438. The cubic root of 491214571 is about 789.0243636198.

The spelling of 491214571 in words is "four hundred ninety-one million, two hundred fourteen thousand, five hundred seventy-one".