2491461 has 24 divisors (see below), whose sum is σ = 4178304. Its totient is φ = 1401120.

The previous prime is 2491457. The next prime is 2491471. The reversal of 2491461 is 1641942.

It is not a de Polignac number, because 2491461 - 2² = 2491457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491471) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 4195 + ... + 4751.

It is an arithmetic number, because the mean of its divisors is an integer number (174096).

2^2491461 is an apocalyptic number.

2491461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2491461 is a deficient number, since it is larger than the sum of its proper divisors (1686843).

2491461 is a wasteful number, since it uses less digits than its factorization.

2491461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 638 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2491461 is about 1578.4362514844. The cubic root of 2491461 is about 135.5661818190.

The spelling of 2491461 in words is "two million, four hundred ninety-one thousand, four hundred sixty-one".