491280241 has 2 divisors, whose sum is σ = 491280242. Its totient is φ = 491280240.

The previous prime is 491280239. The next prime is 491280259. The reversal of 491280241 is 142082194.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 489692641 + 1587600 = 22129^2 + 1260^2 .

It is a cyclic number.

It is not a de Polignac number, because 491280241 - 2¹ = 491280239 is a prime.

Together with 491280239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (491280541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245640120 + 245640121.

It is an arithmetic number, because the mean of its divisors is an integer number (245640121).

Almost surely, 2^491280241 is an apocalyptic number.

It is an amenable number.

491280241 is a deficient number, since it is larger than the sum of its proper divisors (1).

491280241 is an equidigital number, since it uses as much as digits as its factorization.

491280241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 491280241 is about 22164.8424537600. The cubic root of 491280241 is about 789.0595233539.

The spelling of 491280241 in words is "four hundred ninety-one million, two hundred eighty thousand, two hundred forty-one".