5180821 has 8 divisors (see below), whose sum is σ = 5389920. Its totient is φ = 4973808.

The previous prime is 5180809. The next prime is 5180827. The reversal of 5180821 is 1280815.

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

It is a cyclic number.

It is not a de Polignac number, because 5180821 - 2¹⁷ = 5049749 is a prime.

It is a Duffinian number.

5180821 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5180827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6190 + ... + 6976.

It is an arithmetic number, because the mean of its divisors is an integer number (673740).

Almost surely, 2^5180821 is an apocalyptic number.

It is an amenable number.

5180821 is a deficient number, since it is larger than the sum of its proper divisors (209099).

5180821 is a wasteful number, since it uses less digits than its factorization.

5180821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1043.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 5180821 is about 2276.1416915473. The cubic root of 5180821 is about 173.0345638002.

The spelling of 5180821 in words is "five million, one hundred eighty thousand, eight hundred twenty-one".