5543649 has 24 divisors (see below), whose sum is σ = 8929440. Its totient is φ = 3293568.

The previous prime is 5543623. The next prime is 5543701. The reversal of 5543649 is 9463455.

It is a happy number.

5543649 is a `hidden beast` number, since 5 + 5 + 4 + 3 + 649 = 666.

It is not a de Polignac number, because 5543649 - 2⁵ = 5543617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5543149) 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 23 ways as a sum of consecutive naturals, for example, 1954 + ... + 3860.

It is an arithmetic number, because the mean of its divisors is an integer number (372060).

Almost surely, 2^5543649 is an apocalyptic number.

It is an amenable number.

5543649 is a deficient number, since it is larger than the sum of its proper divisors (3385791).

5543649 is a wasteful number, since it uses less digits than its factorization.

5543649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949 (or 1946 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 5543649 is about 2354.4954873603. The cubic root of 5543649 is about 176.9831450004.

The spelling of 5543649 in words is "five million, five hundred forty-three thousand, six hundred forty-nine".