491240515 has 8 divisors (see below), whose sum is σ = 589716720. Its totient is φ = 392840352.

The previous prime is 491240513. The next prime is 491240521. The reversal of 491240515 is 515042194.

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 491240515 - 2¹ = 491240513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491240513) 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, 3669 + ... + 31558.

It is an arithmetic number, because the mean of its divisors is an integer number (73714590).

Almost surely, 2^491240515 is an apocalyptic number.

491240515 is a deficient number, since it is larger than the sum of its proper divisors (98476205).

491240515 is a wasteful number, since it uses less digits than its factorization.

491240515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38021.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 491240515 is about 22163.9462867063. The cubic root of 491240515 is about 789.0382544182.

The spelling of 491240515 in words is "four hundred ninety-one million, two hundred forty thousand, five hundred fifteen".