491253245 has 8 divisors (see below), whose sum is σ = 673718784. Its totient is φ = 336859344.

The previous prime is 491253241. The next prime is 491253253. The reversal of 491253245 is 542352194.

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 491253245 - 2² = 491253241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 14035807 = 491253245 / (4 + 9 + 1 + 2 + 5 + 3 + 2 + 4 + 5).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491253241) 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, 7017869 + ... + 7017938.

It is an arithmetic number, because the mean of its divisors is an integer number (84214848).

Almost surely, 2^491253245 is an apocalyptic number.

It is an amenable number.

491253245 is a deficient number, since it is larger than the sum of its proper divisors (182465539).

491253245 is a wasteful number, since it uses less digits than its factorization.

491253245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14035819.

The product of its digits is 43200, while the sum is 35.

The square root of 491253245 is about 22164.2334629466. The cubic root of 491253245 is about 789.0450700682.

The spelling of 491253245 in words is "four hundred ninety-one million, two hundred fifty-three thousand, two hundred forty-five".