51603659 has 2 divisors, whose sum is σ = 51603660. Its totient is φ = 51603658.

The previous prime is 51603649. The next prime is 51603667. The reversal of 51603659 is 95630615.

51603659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51603659 - 2¹² = 51599563 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (51603649) 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, 25801829 + 25801830.

It is an arithmetic number, because the mean of its divisors is an integer number (25801830).

Almost surely, 2^51603659 is an apocalyptic number.

51603659 is a deficient number, since it is larger than the sum of its proper divisors (1).

51603659 is an equidigital number, since it uses as much as digits as its factorization.

51603659 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 51603659 is about 7183.5686813728. The cubic root of 51603659 is about 372.3003966430.

The spelling of 51603659 in words is "fifty-one million, six hundred three thousand, six hundred fifty-nine".