5551647 has 8 divisors (see below), whose sum is σ = 7435440. Its totient is φ = 3684480.

The previous prime is 5551643. The next prime is 5551669. The reversal of 5551647 is 7461555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5551647 - 2² = 5551643 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

5551647 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5551643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3354 + ... + 4727.

It is an arithmetic number, because the mean of its divisors is an integer number (929430).

Almost surely, 2^5551647 is an apocalyptic number.

5551647 is a deficient number, since it is larger than the sum of its proper divisors (1883793).

5551647 is a wasteful number, since it uses less digits than its factorization.

5551647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8313.

The product of its digits is 21000, while the sum is 33.

The square root of 5551647 is about 2356.1933282309. The cubic root of 5551647 is about 177.0682171857.

The spelling of 5551647 in words is "five million, five hundred fifty-one thousand, six hundred forty-seven".