2791491 has 8 divisors (see below), whose sum is σ = 3729744. Its totient is φ = 1857120.

The previous prime is 2791483. The next prime is 2791493. The reversal of 2791491 is 1941972.

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

It is not a de Polignac number, because 2791491 - 2³ = 2791483 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2791493) 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, 2101 + ... + 3161.

It is an arithmetic number, because the mean of its divisors is an integer number (466218).

2^2791491 is an apocalyptic number.

2791491 is a deficient number, since it is larger than the sum of its proper divisors (938253).

2791491 is a wasteful number, since it uses less digits than its factorization.

2791491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941.

The product of its digits is 4536, while the sum is 33.

The square root of 2791491 is about 1670.7755684113. The cubic root of 2791491 is about 140.8030548526.

It can be divided in two parts, 279 and 1491, that added together give a triangular number (1770 = T₅₉).

The spelling of 2791491 in words is "two million, seven hundred ninety-one thousand, four hundred ninety-one".