51500377 has 2 divisors, whose sum is σ = 51500378. Its totient is φ = 51500376.

The previous prime is 51500357. The next prime is 51500389. The reversal of 51500377 is 77300515.

51500377 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., 29419776 + 22080601 = 5424^2 + 4699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51500377 is a prime.

It is a super-2 number, since 2×51500377² = 5304577662284258, which contains 22 as substring.

It is equal to p_3085633 and since 51500377 and 3085633 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51500357) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25750188 + 25750189.

It is an arithmetic number, because the mean of its divisors is an integer number (25750189).

Almost surely, 2^51500377 is an apocalyptic number.

It is an amenable number.

51500377 is a deficient number, since it is larger than the sum of its proper divisors (1).

51500377 is an equidigital number, since it uses as much as digits as its factorization.

51500377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3675, while the sum is 28.

The square root of 51500377 is about 7176.3763139902. The cubic root of 51500377 is about 372.0518508871.

The spelling of 51500377 in words is "fifty-one million, five hundred thousand, three hundred seventy-seven".