50666489 has 2 divisors, whose sum is σ = 50666490. Its totient is φ = 50666488.

The previous prime is 50666467. The next prime is 50666519. The reversal of 50666489 is 98466605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50623225 + 43264 = 7115^2 + 208^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50666489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (50666449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25333244 + 25333245.

It is an arithmetic number, because the mean of its divisors is an integer number (25333245).

Almost surely, 2^50666489 is an apocalyptic number.

It is an amenable number.

50666489 is a deficient number, since it is larger than the sum of its proper divisors (1).

50666489 is an equidigital number, since it uses as much as digits as its factorization.

50666489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 50666489 is about 7118.0396880040. The cubic root of 50666489 is about 370.0328410100.

The spelling of 50666489 in words is "fifty million, six hundred sixty-six thousand, four hundred eighty-nine".