5649871 has 2 divisors, whose sum is σ = 5649872. Its totient is φ = 5649870.

The previous prime is 5649851. The next prime is 5649877. The reversal of 5649871 is 1789465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5649871 - 2¹¹ = 5647823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5649877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824935 + 2824936.

It is an arithmetic number, because the mean of its divisors is an integer number (2824936).

Almost surely, 2^5649871 is an apocalyptic number.

5649871 is a deficient number, since it is larger than the sum of its proper divisors (1).

5649871 is an equidigital number, since it uses as much as digits as its factorization.

5649871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 5649871 is about 2376.9457292921. The cubic root of 5649871 is about 178.1063939117.

The spelling of 5649871 in words is "five million, six hundred forty-nine thousand, eight hundred seventy-one".