5171820 has 24 divisors (see below), whose sum is σ = 14481264. Its totient is φ = 1379136.

The previous prime is 5171809. The next prime is 5171839. The reversal of 5171820 is 281715.

It is a super-2 number, since 2×5171820² = 53495444224800, which contains 22 as substring.

It is an unprimeable number.

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, 43039 + ... + 43158.

It is an arithmetic number, because the mean of its divisors is an integer number (603386).

Almost surely, 2^5171820 is an apocalyptic number.

It is an amenable number.

5171820 is an abundant number, since it is smaller than the sum of its proper divisors (9309444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5171820 is a wasteful number, since it uses less digits than its factorization.

5171820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86209 (or 86207 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 5171820 is about 2274.1635825068. The cubic root of 5171820 is about 172.9342973910.

The spelling of 5171820 in words is "five million, one hundred seventy-one thousand, eight hundred twenty".