5481649 has 2 divisors, whose sum is σ = 5481650. Its totient is φ = 5481648.

The previous prime is 5481647. The next prime is 5481653. The reversal of 5481649 is 9461845.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4809249 + 672400 = 2193^2 + 820^2 .

It is a cyclic number.

It is not a de Polignac number, because 5481649 - 2¹ = 5481647 is a prime.

Together with 5481647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5481647) 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 as a sum of consecutive naturals, namely, 2740824 + 2740825.

It is an arithmetic number, because the mean of its divisors is an integer number (2740825).

Almost surely, 2^5481649 is an apocalyptic number.

It is an amenable number.

5481649 is a deficient number, since it is larger than the sum of its proper divisors (1).

5481649 is an equidigital number, since it uses as much as digits as its factorization.

5481649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 5481649 is about 2341.2921645963. The cubic root of 5481649 is about 176.3208785562.

It can be divided in two parts, 548 and 1649, that added together give a cube (2197 = 13³).

The spelling of 5481649 in words is "five million, four hundred eighty-one thousand, six hundred forty-nine".