5231861 has 6 divisors (see below), whose sum is σ = 5419362. Its totient is φ = 5050640.

The previous prime is 5231857. The next prime is 5231881. The reversal of 5231861 is 1681325.

It can be written as a sum of positive squares in 3 ways, for example, as 78961 + 5152900 = 281^2 + 2270^2 .

It is not a de Polignac number, because 5231861 - 2² = 5231857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 5231861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2270 + ... + 3951.

It is an arithmetic number, because the mean of its divisors is an integer number (903227).

Almost surely, 2^5231861 is an apocalyptic number.

It is an amenable number.

5231861 is a deficient number, since it is larger than the sum of its proper divisors (187501).

5231861 is an equidigital number, since it uses as much as digits as its factorization.

5231861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6279 (or 6250 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 5231861 is about 2287.3261682585. The cubic root of 5231861 is about 173.6009373158.

It can be divided in two parts, 52 and 31861, that added together give a palindrome (31913).

The spelling of 5231861 in words is "five million, two hundred thirty-one thousand, eight hundred sixty-one".