50640559 has 2 divisors, whose sum is σ = 50640560. Its totient is φ = 50640558.

The previous prime is 50640533. The next prime is 50640581. The reversal of 50640559 is 95504605.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50640559 - 2¹⁹ = 50116271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50640859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25320279 + 25320280.

It is an arithmetic number, because the mean of its divisors is an integer number (25320280).

Almost surely, 2^50640559 is an apocalyptic number.

50640559 is a deficient number, since it is larger than the sum of its proper divisors (1).

50640559 is an equidigital number, since it uses as much as digits as its factorization.

50640559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 50640559 is about 7116.2180264520. The cubic root of 50640559 is about 369.9697053355.

The spelling of 50640559 in words is "fifty million, six hundred forty thousand, five hundred fifty-nine".