51043231 has 8 divisors (see below), whose sum is σ = 54158544. Its totient is φ = 47940480.

The previous prime is 51043229. The next prime is 51043247. The reversal of 51043231 is 13234015.

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 51043231 - 2¹ = 51043229 is a prime.

It is a super-2 number, since 2×51043231² = 5210822861838722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51043199 and 51043208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51043261) 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, 6021 + ... + 11761.

It is an arithmetic number, because the mean of its divisors is an integer number (6769818).

Almost surely, 2^51043231 is an apocalyptic number.

51043231 is a deficient number, since it is larger than the sum of its proper divisors (3115313).

51043231 is a wasteful number, since it uses less digits than its factorization.

51043231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6281.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 51043231 is about 7144.4545628060. The cubic root of 51043231 is about 370.9477310767.

Adding to 51043231 its reverse (13234015), we get a palindrome (64277246).

The spelling of 51043231 in words is "fifty-one million, forty-three thousand, two hundred thirty-one".