51684107 has 2 divisors, whose sum is σ = 51684108. Its totient is φ = 51684106.

The previous prime is 51684043. The next prime is 51684109. The reversal of 51684107 is 70148615.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51684107 - 2⁶ = 51684043 is a prime.

Together with 51684109, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51684109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25842053 + 25842054.

It is an arithmetic number, because the mean of its divisors is an integer number (25842054).

Almost surely, 2^51684107 is an apocalyptic number.

51684107 is a deficient number, since it is larger than the sum of its proper divisors (1).

51684107 is an equidigital number, since it uses as much as digits as its factorization.

51684107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 51684107 is about 7189.1659460608. The cubic root of 51684107 is about 372.4937632396.

The spelling of 51684107 in words is "fifty-one million, six hundred eighty-four thousand, one hundred seven".