51424837 has 2 divisors, whose sum is σ = 51424838. Its totient is φ = 51424836.

The previous prime is 51424829. The next prime is 51424843. The reversal of 51424837 is 73842415.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51394561 + 30276 = 7169^2 + 174^2 .

It is a cyclic number.

It is not a de Polignac number, because 51424837 - 2³ = 51424829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51424897) 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, 25712418 + 25712419.

It is an arithmetic number, because the mean of its divisors is an integer number (25712419).

Almost surely, 2^51424837 is an apocalyptic number.

It is an amenable number.

51424837 is a deficient number, since it is larger than the sum of its proper divisors (1).

51424837 is an equidigital number, since it uses as much as digits as its factorization.

51424837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 34.

The square root of 51424837 is about 7171.1112806873. Note that the first 3 decimals coincide. The cubic root of 51424837 is about 371.8698551368.

The spelling of 51424837 in words is "fifty-one million, four hundred twenty-four thousand, eight hundred thirty-seven".