5263821 has 6 divisors (see below), whose sum is σ = 7603310. Its totient is φ = 3509208.

The previous prime is 5263813. The next prime is 5263861. The reversal of 5263821 is 1283625.

5263821 is a `hidden beast` number, since 5 + 2 + 638 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5225796 + 38025 = 2286^2 + 195^2 .

It is not a de Polignac number, because 5263821 - 2³ = 5263813 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 (5263861) 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, 292426 + ... + 292443.

Almost surely, 2^5263821 is an apocalyptic number.

It is an amenable number.

5263821 is a deficient number, since it is larger than the sum of its proper divisors (2339489).

5263821 is a wasteful number, since it uses less digits than its factorization.

5263821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584875 (or 584872 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 5263821 is about 2294.3018545954. The cubic root of 5263821 is about 173.9537134115.

It can be divided in two parts, 5263 and 821, that added together give a square (6084 = 78²).

The spelling of 5263821 in words is "five million, two hundred sixty-three thousand, eight hundred twenty-one".