5649771 has 4 divisors (see below), whose sum is σ = 7533032. Its totient is φ = 3766512.

The previous prime is 5649769. The next prime is 5649779. The reversal of 5649771 is 1779465.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 5649771 - 2¹ = 5649769 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5649779) 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 3 ways as a sum of consecutive naturals, for example, 941626 + ... + 941631.

It is an arithmetic number, because the mean of its divisors is an integer number (1883258).

Almost surely, 2^5649771 is an apocalyptic number.

5649771 is a deficient number, since it is larger than the sum of its proper divisors (1883261).

5649771 is a wasteful number, since it uses less digits than its factorization.

5649771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883260.

The product of its digits is 52920, while the sum is 39.

The square root of 5649771 is about 2376.9246938008. The cubic root of 5649771 is about 178.1053431063.

The spelling of 5649771 in words is "five million, six hundred forty-nine thousand, seven hundred seventy-one".