2491516 has 6 divisors (see below), whose sum is σ = 4360160. Its totient is φ = 1245756.

The previous prime is 2491499. The next prime is 2491519. The reversal of 2491516 is 6151942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311436 + ... + 311443.

2^2491516 is an apocalyptic number.

It is an amenable number.

2491516 is a deficient number, since it is larger than the sum of its proper divisors (1868644).

2491516 is a wasteful number, since it uses less digits than its factorization.

2491516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622883 (or 622881 counting only the distinct ones).

The product of its digits is 2160, while the sum is 28.

The square root of 2491516 is about 1578.4536736946. The cubic root of 2491516 is about 135.5671793709.

The spelling of 2491516 in words is "two million, four hundred ninety-one thousand, five hundred sixteen".