51612751 has 2 divisors, whose sum is σ = 51612752. Its totient is φ = 51612750.

The previous prime is 51612749. The next prime is 51612793. The reversal of 51612751 is 15721615.

51612751 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 51612751 - 2¹ = 51612749 is a prime.

Together with 51612749, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51610751) 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, 25806375 + 25806376.

It is an arithmetic number, because the mean of its divisors is an integer number (25806376).

Almost surely, 2^51612751 is an apocalyptic number.

51612751 is a deficient number, since it is larger than the sum of its proper divisors (1).

51612751 is an equidigital number, since it uses as much as digits as its factorization.

51612751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2100, while the sum is 28.

The square root of 51612751 is about 7184.2014865954. The cubic root of 51612751 is about 372.3222604442.

The spelling of 51612751 in words is "fifty-one million, six hundred twelve thousand, seven hundred fifty-one".