51208459 has 2 divisors, whose sum is σ = 51208460. Its totient is φ = 51208458.

The previous prime is 51208457. The next prime is 51208483. The reversal of 51208459 is 95480215.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51208459 - 2¹ = 51208457 is a prime.

Together with 51208457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (51208457) 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, 25604229 + 25604230.

It is an arithmetic number, because the mean of its divisors is an integer number (25604230).

Almost surely, 2^51208459 is an apocalyptic number.

51208459 is a deficient number, since it is larger than the sum of its proper divisors (1).

51208459 is an equidigital number, since it uses as much as digits as its factorization.

51208459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 51208459 is about 7156.0085941815. The cubic root of 51208459 is about 371.3475551462.

The spelling of 51208459 in words is "fifty-one million, two hundred eight thousand, four hundred fifty-nine".