2491173 has 12 divisors (see below), whose sum is σ = 3696108. Its totient is φ = 1615680.

The previous prime is 2491171. The next prime is 2491189. The reversal of 2491173 is 3711942.

2491173 is a `hidden beast` number, since 2 + 491 + 173 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2196324 + 294849 = 1482^2 + 543^2 .

It is not a de Polignac number, because 2491173 - 2¹ = 2491171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3408 + ... + 4073.

It is an arithmetic number, because the mean of its divisors is an integer number (308009).

2^2491173 is an apocalyptic number.

It is an amenable number.

2491173 is a deficient number, since it is larger than the sum of its proper divisors (1204935).

2491173 is a wasteful number, since it uses less digits than its factorization.

2491173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7524 (or 7521 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 2491173 is about 1578.3450193161. The cubic root of 2491173 is about 135.5609580347.

The spelling of 2491173 in words is "two million, four hundred ninety-one thousand, one hundred seventy-three".