2491465 has 8 divisors (see below), whose sum is σ = 3007368. Its totient is φ = 1981440.

The previous prime is 2491457. The next prime is 2491471. The reversal of 2491465 is 5641942.

It can be written as a sum of positive squares in 4 ways, for example, as 141376 + 2350089 = 376^2 + 1533^2 .

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

It is not a de Polignac number, because 2491465 - 2³ = 2491457 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472 + ... + 2281.

It is an arithmetic number, because the mean of its divisors is an integer number (375921).

2^2491465 is an apocalyptic number.

It is an amenable number.

2491465 is a deficient number, since it is larger than the sum of its proper divisors (515903).

2491465 is a wasteful number, since it uses less digits than its factorization.

2491465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939.

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

The square root of 2491465 is about 1578.4375185607. The cubic root of 2491465 is about 135.5662543687.

The spelling of 2491465 in words is "two million, four hundred ninety-one thousand, four hundred sixty-five".