50685289 has 2 divisors, whose sum is σ = 50685290. Its totient is φ = 50685288.

The previous prime is 50685281. The next prime is 50685343. The reversal of 50685289 is 98258605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46717225 + 3968064 = 6835^2 + 1992^2 .

It is a cyclic number.

It is not a de Polignac number, because 50685289 - 2³ = 50685281 is a prime.

It is not a weakly prime, because it can be changed into another prime (50685281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25342644 + 25342645.

It is an arithmetic number, because the mean of its divisors is an integer number (25342645).

Almost surely, 2^50685289 is an apocalyptic number.

It is an amenable number.

50685289 is a deficient number, since it is larger than the sum of its proper divisors (1).

50685289 is an equidigital number, since it uses as much as digits as its factorization.

50685289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 50685289 is about 7119.3601538341. The cubic root of 50685289 is about 370.0786027307.

The spelling of 50685289 in words is "fifty million, six hundred eighty-five thousand, two hundred eighty-nine".