5206821 has 8 divisors (see below), whose sum is σ = 7006560. Its totient is φ = 3439152.

The previous prime is 5206819. The next prime is 5206823. The reversal of 5206821 is 1286025.

It is an interprime number because it is at equal distance from previous prime (5206819) and next prime (5206823).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5206821 - 2¹ = 5206819 is a prime.

It is a super-2 number, since 2×5206821² = 54221969852082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5206791 and 5206800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5206823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7635 + ... + 8288.

It is an arithmetic number, because the mean of its divisors is an integer number (875820).

Almost surely, 2^5206821 is an apocalyptic number.

It is an amenable number.

5206821 is a deficient number, since it is larger than the sum of its proper divisors (1799739).

5206821 is a wasteful number, since it uses less digits than its factorization.

5206821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16035.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 5206821 is about 2281.8459632499. The cubic root of 5206821 is about 173.3235394696.

The spelling of 5206821 in words is "five million, two hundred six thousand, eight hundred twenty-one".