5543749 has 2 divisors, whose sum is σ = 5543750. Its totient is φ = 5543748.

The previous prime is 5543729. The next prime is 5543753. The reversal of 5543749 is 9473455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4060225 + 1483524 = 2015^2 + 1218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5543749 is a prime.

5543749 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5543719) 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, 2771874 + 2771875.

It is an arithmetic number, because the mean of its divisors is an integer number (2771875).

Almost surely, 2^5543749 is an apocalyptic number.

It is an amenable number.

5543749 is a deficient number, since it is larger than the sum of its proper divisors (1).

5543749 is an equidigital number, since it uses as much as digits as its factorization.

5543749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 37.

The square root of 5543749 is about 2354.5167232364. The cubic root of 5543749 is about 176.9842091736.

The spelling of 5543749 in words is "five million, five hundred forty-three thousand, seven hundred forty-nine".