491152243 has 8 divisors (see below), whose sum is σ = 509503680. Its totient is φ = 473104320.

The previous prime is 491152217. The next prime is 491152247. The reversal of 491152243 is 342251194.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-491152243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491152247) 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, 72580 + ... + 79057.

It is an arithmetic number, because the mean of its divisors is an integer number (63687960).

Almost surely, 2^491152243 is an apocalyptic number.

491152243 is a deficient number, since it is larger than the sum of its proper divisors (18351437).

491152243 is a wasteful number, since it uses less digits than its factorization.

491152243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151757.

The product of its digits is 8640, while the sum is 31.

The square root of 491152243 is about 22161.9548551115. The cubic root of 491152243 is about 788.9909902948.

The spelling of 491152243 in words is "four hundred ninety-one million, one hundred fifty-two thousand, two hundred forty-three".