5491281 has 16 divisors (see below), whose sum is σ = 7652288. Its totient is φ = 3499200.

The previous prime is 5491271. The next prime is 5491301. The reversal of 5491281 is 1821945.

It is a happy number.

It is not a de Polignac number, because 5491281 - 2⁶ = 5491217 is a prime.

It is a super-2 number, since 2×5491281² = 60308334041922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5491231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6366 + ... + 7176.

It is an arithmetic number, because the mean of its divisors is an integer number (478268).

Almost surely, 2^5491281 is an apocalyptic number.

It is an amenable number.

5491281 is a deficient number, since it is larger than the sum of its proper divisors (2161007).

5491281 is a wasteful number, since it uses less digits than its factorization.

5491281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912.

The product of its digits is 2880, while the sum is 30.

The square root of 5491281 is about 2343.3482455666. The cubic root of 5491281 is about 176.4240913513.

It can be divided in two parts, 549 and 1281, that added together give a triangular number (1830 = T₆₀).

The spelling of 5491281 in words is "five million, four hundred ninety-one thousand, two hundred eighty-one".