50139805 has 8 divisors (see below), whose sum is σ = 60328800. Its totient is φ = 40004496.

The previous prime is 50139797. The next prime is 50139821. The reversal of 50139805 is 50893105.

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

It is a cyclic number.

It is not a de Polignac number, because 50139805 - 2³ = 50139797 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11335 + ... + 15124.

It is an arithmetic number, because the mean of its divisors is an integer number (7541100).

Almost surely, 2^50139805 is an apocalyptic number.

It is an amenable number.

50139805 is a deficient number, since it is larger than the sum of its proper divisors (10188995).

50139805 is a wasteful number, since it uses less digits than its factorization.

50139805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26843.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 50139805 is about 7080.9466175081. The cubic root of 50139805 is about 368.7461943493.

The spelling of 50139805 in words is "fifty million, one hundred thirty-nine thousand, eight hundred five".