51580831 has 2 divisors, whose sum is σ = 51580832. Its totient is φ = 51580830.

The previous prime is 51580813. The next prime is 51580847. The reversal of 51580831 is 13808515.

Together with previous prime (51580813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51580831 - 2⁵ = 51580799 is a prime.

It is a super-2 number, since 2×51580831² = 5321164253301122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51580793 and 51580802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51580811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25790415 + 25790416.

It is an arithmetic number, because the mean of its divisors is an integer number (25790416).

Almost surely, 2^51580831 is an apocalyptic number.

51580831 is a deficient number, since it is larger than the sum of its proper divisors (1).

51580831 is an equidigital number, since it uses as much as digits as its factorization.

51580831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 51580831 is about 7181.9796017533. The cubic root of 51580831 is about 372.2454901554.

The spelling of 51580831 in words is "fifty-one million, five hundred eighty thousand, eight hundred thirty-one".