51880831 has 2 divisors, whose sum is σ = 51880832. Its totient is φ = 51880830.

The previous prime is 51880819. The next prime is 51880853. The reversal of 51880831 is 13808815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51880831 - 2⁹ = 51880319 is a prime.

It is a super-2 number, since 2×51880831² = 5383241250501122, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51880861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25940415 + 25940416.

It is an arithmetic number, because the mean of its divisors is an integer number (25940416).

Almost surely, 2^51880831 is an apocalyptic number.

51880831 is a deficient number, since it is larger than the sum of its proper divisors (1).

51880831 is an equidigital number, since it uses as much as digits as its factorization.

51880831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 51880831 is about 7202.8349279988. The cubic root of 51880831 is about 372.9657696308.

The spelling of 51880831 in words is "fifty-one million, eight hundred eighty thousand, eight hundred thirty-one".