2549845 has 8 divisors (see below), whose sum is σ = 3087576. Its totient is φ = 2021376.

The previous prime is 2549821. The next prime is 2549863. The reversal of 2549845 is 5489452.

2549845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 362404 + 2187441 = 602^2 + 1479^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2549845 - 2¹⁹ = 2025557 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1692 + ... + 2821.

It is an arithmetic number, because the mean of its divisors is an integer number (385947).

2^2549845 is an apocalyptic number.

It is an amenable number.

2549845 is a deficient number, since it is larger than the sum of its proper divisors (537731).

2549845 is a wasteful number, since it uses less digits than its factorization.

2549845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4631.

The product of its digits is 57600, while the sum is 37.

The square root of 2549845 is about 1596.8234091470. The cubic root of 2549845 is about 136.6169526366.

The spelling of 2549845 in words is "two million, five hundred forty-nine thousand, eight hundred forty-five".