5047821 has 6 divisors (see below), whose sum is σ = 7291310. Its totient is φ = 3365208.

The previous prime is 5047817. The next prime is 5047831. The reversal of 5047821 is 1287405.

It can be written as a sum of positive squares in only one way, i.e., 2842596 + 2205225 = 1686^2 + 1485^2 .

It is not a de Polignac number, because 5047821 - 2² = 5047817 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5047831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280426 + ... + 280443.

Almost surely, 2^5047821 is an apocalyptic number.

It is an amenable number.

5047821 is a deficient number, since it is larger than the sum of its proper divisors (2243489).

5047821 is a wasteful number, since it uses less digits than its factorization.

5047821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560875 (or 560872 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 5047821 is about 2246.7356319781. The cubic root of 5047821 is about 171.5410175954.

The spelling of 5047821 in words is "five million, forty-seven thousand, eight hundred twenty-one".