5071821 has 8 divisors (see below), whose sum is σ = 6855360. Its totient is φ = 3334752.

The previous prime is 5071813. The next prime is 5071837. The reversal of 5071821 is 1281705.

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

It is not a de Polignac number, because 5071821 - 2³ = 5071813 is a prime.

5071821 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 5071791 and 5071800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5071921) 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, 11361 + ... + 11798.

It is an arithmetic number, because the mean of its divisors is an integer number (856920).

Almost surely, 2^5071821 is an apocalyptic number.

It is an amenable number.

5071821 is a deficient number, since it is larger than the sum of its proper divisors (1783539).

5071821 is a wasteful number, since it uses less digits than its factorization.

5071821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23235.

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

The square root of 5071821 is about 2252.0703807830. The cubic root of 5071821 is about 171.8124533187.

The spelling of 5071821 in words is "five million, seventy-one thousand, eight hundred twenty-one".