5551749 has 18 divisors (see below), whose sum is σ = 9329190. Its totient is φ = 3172176.

The previous prime is 5551729. The next prime is 5551753. The reversal of 5551749 is 9471555.

It can be written as a sum of positive squares in only one way, i.e., 3572100 + 1979649 = 1890^2 + 1407^2 .

It is not a de Polignac number, because 5551749 - 2⁹ = 5551237 is a prime.

5551749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551709) 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 17 ways as a sum of consecutive naturals, for example, 5854 + ... + 6735.

Almost surely, 2^5551749 is an apocalyptic number.

It is an amenable number.

5551749 is a deficient number, since it is larger than the sum of its proper divisors (3777441).

5551749 is a wasteful number, since it uses less digits than its factorization.

5551749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12609 (or 12599 counting only the distinct ones).

The product of its digits is 31500, while the sum is 36.

The square root of 5551749 is about 2356.2149732145. The cubic root of 5551749 is about 177.0693015994.

It can be divided in two parts, 555 and 1749, that added together give a square (2304 = 48²).

The spelling of 5551749 in words is "five million, five hundred fifty-one thousand, seven hundred forty-nine".