491210071 has 8 divisors (see below), whose sum is σ = 542649600. Its totient is φ = 440901240.

The previous prime is 491210063. The next prime is 491210099. The reversal of 491210071 is 170012194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491210071 - 2³ = 491210063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491217071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281761 + ... + 283498.

It is an arithmetic number, because the mean of its divisors is an integer number (67831200).

Almost surely, 2^491210071 is an apocalyptic number.

491210071 is a deficient number, since it is larger than the sum of its proper divisors (51439529).

491210071 is a wasteful number, since it uses less digits than its factorization.

491210071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565349.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 491210071 is about 22163.2594850126. The cubic root of 491210071 is about 789.0219542040.

The spelling of 491210071 in words is "four hundred ninety-one million, two hundred ten thousand, seventy-one".