51503359 has 2 divisors, whose sum is σ = 51503360. Its totient is φ = 51503358.

The previous prime is 51503327. The next prime is 51503363. The reversal of 51503359 is 95330515.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51503359 - 2⁵ = 51503327 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51503359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51504359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25751679 + 25751680.

It is an arithmetic number, because the mean of its divisors is an integer number (25751680).

Almost surely, 2^51503359 is an apocalyptic number.

51503359 is a deficient number, since it is larger than the sum of its proper divisors (1).

51503359 is an equidigital number, since it uses as much as digits as its factorization.

51503359 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10125, while the sum is 31.

The square root of 51503359 is about 7176.5840760072. The cubic root of 51503359 is about 372.0590316579.

The spelling of 51503359 in words is "fifty-one million, five hundred three thousand, three hundred fifty-nine".