5526821 has 4 divisors (see below), whose sum is σ = 5581644. Its totient is φ = 5472000.

The previous prime is 5526799. The next prime is 5526823. The reversal of 5526821 is 1286255.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4778596 + 748225 = 2186^2 + 865^2 .

It is a cyclic number.

It is not a de Polignac number, because 5526821 - 2¹⁰ = 5525797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5526823) 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, 27260 + ... + 27461.

It is an arithmetic number, because the mean of its divisors is an integer number (1395411).

Almost surely, 2^5526821 is an apocalyptic number.

It is an amenable number.

5526821 is a deficient number, since it is larger than the sum of its proper divisors (54823).

5526821 is a wasteful number, since it uses less digits than its factorization.

5526821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54822.

The product of its digits is 4800, while the sum is 29.

The square root of 5526821 is about 2350.9191819371. The cubic root of 5526821 is about 176.8038833494.

The spelling of 5526821 in words is "five million, five hundred twenty-six thousand, eight hundred twenty-one".