51880117 has 2 divisors, whose sum is σ = 51880118. Its totient is φ = 51880116.

The previous prime is 51880099. The next prime is 51880121. The reversal of 51880117 is 71108815.

51880117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42693156 + 9186961 = 6534^2 + 3031^2 .

It is a cyclic number.

It is not a de Polignac number, because 51880117 - 2¹¹ = 51878069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51880417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25940058 + 25940059.

It is an arithmetic number, because the mean of its divisors is an integer number (25940059).

Almost surely, 2^51880117 is an apocalyptic number.

It is an amenable number.

51880117 is a deficient number, since it is larger than the sum of its proper divisors (1).

51880117 is an equidigital number, since it uses as much as digits as its factorization.

51880117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 31.

The square root of 51880117 is about 7202.7853640102. The cubic root of 51880117 is about 372.9640586663.

The spelling of 51880117 in words is "fifty-one million, eight hundred eighty thousand, one hundred seventeen".