50685609 has 8 divisors (see below), whose sum is σ = 72779392. Its totient is φ = 31191120.

The previous prime is 50685601. The next prime is 50685617. The reversal of 50685609 is 90658605.

It is an interprime number because it is at equal distance from previous prime (50685601) and next prime (50685617).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 50685609 - 2³ = 50685601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1299631 = 50685609 / (5 + 0 + 6 + 8 + 5 + 6 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50685601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649777 + ... + 649854.

It is an arithmetic number, because the mean of its divisors is an integer number (9097424).

Almost surely, 2^50685609 is an apocalyptic number.

It is an amenable number.

50685609 is a deficient number, since it is larger than the sum of its proper divisors (22093783).

50685609 is a wasteful number, since it uses less digits than its factorization.

50685609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299647.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 50685609 is about 7119.3826277283. The cubic root of 50685609 is about 370.0793815557.

The spelling of 50685609 in words is "fifty million, six hundred eighty-five thousand, six hundred nine".