5221831 has 4 divisors (see below), whose sum is σ = 5232600. Its totient is φ = 5211064.

The previous prime is 5221829. The next prime is 5221849. The reversal of 5221831 is 1381225.

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

It is a cyclic number.

It is not a de Polignac number, because 5221831 - 2¹ = 5221829 is a prime.

It is a super-2 number, since 2×5221831² = 54535037985122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5221891) 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, 4621 + ... + 5638.

It is an arithmetic number, because the mean of its divisors is an integer number (1308150).

Almost surely, 2^5221831 is an apocalyptic number.

5221831 is a deficient number, since it is larger than the sum of its proper divisors (10769).

5221831 is a wasteful number, since it uses less digits than its factorization.

5221831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10768.

The product of its digits is 480, while the sum is 22.

The square root of 5221831 is about 2285.1326000913. The cubic root of 5221831 is about 173.4899295702.

Subtracting from 5221831 its reverse (1381225), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 5221831 in words is "five million, two hundred twenty-one thousand, eight hundred thirty-one".