2491055 has 16 divisors (see below), whose sum is σ = 3454464. Its totient is φ = 1689120.

The previous prime is 2491043. The next prime is 2491063. The reversal of 2491055 is 5501942.

It is a de Polignac number, because none of the positive numbers 2^k-2491055 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3260 + ... + 3950.

It is an arithmetic number, because the mean of its divisors is an integer number (215904).

2^2491055 is an apocalyptic number.

2491055 is a deficient number, since it is larger than the sum of its proper divisors (963409).

2491055 is a wasteful number, since it uses less digits than its factorization.

2491055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 2491055 is about 1578.3076379464. The cubic root of 2491055 is about 135.5588176179.

Adding to 2491055 its reverse (5501942), we get a palindrome (7992997).

The spelling of 2491055 in words is "two million, four hundred ninety-one thousand, fifty-five".