5081649 has 4 divisors (see below), whose sum is σ = 6775536. Its totient is φ = 3387764.

The previous prime is 5081647. The next prime is 5081669. The reversal of 5081649 is 9461805.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5081649 - 2¹ = 5081647 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5081647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846939 + ... + 846944.

It is an arithmetic number, because the mean of its divisors is an integer number (1693884).

Almost surely, 2^5081649 is an apocalyptic number.

It is an amenable number.

5081649 is a deficient number, since it is larger than the sum of its proper divisors (1693887).

5081649 is a wasteful number, since it uses less digits than its factorization.

5081649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693886.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 5081649 is about 2254.2513169565. The cubic root of 5081649 is about 171.9233591306.

The spelling of 5081649 in words is "five million, eighty-one thousand, six hundred forty-nine".