5290821 has 12 divisors (see below), whose sum is σ = 7747948. Its totient is φ = 3478464.

The previous prime is 5290807. The next prime is 5290843. The reversal of 5290821 is 1280925.

5290821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3572100 + 1718721 = 1890^2 + 1311^2 .

It is not a de Polignac number, because 5290821 - 2⁹ = 5290309 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 (5290871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3370 + ... + 4683.

Almost surely, 2^5290821 is an apocalyptic number.

It is an amenable number.

5290821 is a deficient number, since it is larger than the sum of its proper divisors (2457127).

5290821 is a wasteful number, since it uses less digits than its factorization.

5290821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8132 (or 8129 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 5290821 is about 2300.1784713365. The cubic root of 5290821 is about 174.2506297034.

The spelling of 5290821 in words is "five million, two hundred ninety thousand, eight hundred twenty-one".