50639807 has 4 divisors (see below), whose sum is σ = 53305080. Its totient is φ = 47974536.

The previous prime is 50639803. The next prime is 50639837. The reversal of 50639807 is 70893605.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50639807 - 2² = 50639803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50639801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1332608 + ... + 1332645.

It is an arithmetic number, because the mean of its divisors is an integer number (13326270).

Almost surely, 2^50639807 is an apocalyptic number.

50639807 is a deficient number, since it is larger than the sum of its proper divisors (2665273).

50639807 is a wasteful number, since it uses less digits than its factorization.

50639807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665272.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 50639807 is about 7116.1651892013. The cubic root of 50639807 is about 369.9678740064.

The spelling of 50639807 in words is "fifty million, six hundred thirty-nine thousand, eight hundred seven".