51456877 has 2 divisors, whose sum is σ = 51456878. Its totient is φ = 51456876.

The previous prime is 51456857. The next prime is 51456893. The reversal of 51456877 is 77865415.

51456877 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., 44769481 + 6687396 = 6691^2 + 2586^2 .

It is a cyclic number.

It is not a de Polignac number, because 51456877 - 2⁷ = 51456749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51456857) 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, 25728438 + 25728439.

It is an arithmetic number, because the mean of its divisors is an integer number (25728439).

Almost surely, 2^51456877 is an apocalyptic number.

It is an amenable number.

51456877 is a deficient number, since it is larger than the sum of its proper divisors (1).

51456877 is an equidigital number, since it uses as much as digits as its factorization.

51456877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235200, while the sum is 43.

The square root of 51456877 is about 7173.3448962113. The cubic root of 51456877 is about 371.9470696842.

The spelling of 51456877 in words is "fifty-one million, four hundred fifty-six thousand, eight hundred seventy-seven".