2549491 has 4 divisors (see below), whose sum is σ = 2913712. Its totient is φ = 2185272.

The previous prime is 2549479. The next prime is 2549531. The reversal of 2549491 is 1949452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2549491 - 2⁹ = 2548979 is a prime.

It is a super-3 number, since 3×2549491³ = 49714342993013333313, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2549431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182100 + ... + 182113.

It is an arithmetic number, because the mean of its divisors is an integer number (728428).

2^2549491 is an apocalyptic number.

2549491 is a deficient number, since it is larger than the sum of its proper divisors (364221).

2549491 is an equidigital number, since it uses as much as digits as its factorization.

2549491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364220.

The product of its digits is 12960, while the sum is 34.

The square root of 2549491 is about 1596.7125602312. The cubic root of 2549491 is about 136.6106300772.

The spelling of 2549491 in words is "two million, five hundred forty-nine thousand, four hundred ninety-one".