51761687 has 2 divisors, whose sum is σ = 51761688. Its totient is φ = 51761686.

The previous prime is 51761683. The next prime is 51761693. The reversal of 51761687 is 78616715.

51761687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51761687 - 2² = 51761683 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51761683) 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, 25880843 + 25880844.

It is an arithmetic number, because the mean of its divisors is an integer number (25880844).

Almost surely, 2^51761687 is an apocalyptic number.

51761687 is a deficient number, since it is larger than the sum of its proper divisors (1).

51761687 is an equidigital number, since it uses as much as digits as its factorization.

51761687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 41.

The square root of 51761687 is about 7194.5595417649. The cubic root of 51761687 is about 372.6800462887.

The spelling of 51761687 in words is "fifty-one million, seven hundred sixty-one thousand, six hundred eighty-seven".