51095687 has 2 divisors, whose sum is σ = 51095688. Its totient is φ = 51095686.

The previous prime is 51095669. The next prime is 51095689. The reversal of 51095687 is 78659015.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51095687 - 2¹⁰ = 51094663 is a prime.

It is a super-2 number, since 2×51095687² = 5221538460003938, which contains 22 as substring.

Together with 51095689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51095689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25547843 + 25547844.

It is an arithmetic number, because the mean of its divisors is an integer number (25547844).

Almost surely, 2^51095687 is an apocalyptic number.

51095687 is a deficient number, since it is larger than the sum of its proper divisors (1).

51095687 is an equidigital number, since it uses as much as digits as its factorization.

51095687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 51095687 is about 7148.1247191134. The cubic root of 51095687 is about 371.0747591660.

The spelling of 51095687 in words is "fifty-one million, ninety-five thousand, six hundred eighty-seven".