50143639 has 16 divisors (see below), whose sum is σ = 63846720. Its totient is φ = 38304000.

The previous prime is 50143631. The next prime is 50143649. The reversal of 50143639 is 93634105.

It is not a de Polignac number, because 50143639 - 2³ = 50143631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 50143639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50143631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6862 + ... + 12139.

It is an arithmetic number, because the mean of its divisors is an integer number (3990420).

Almost surely, 2^50143639 is an apocalyptic number.

50143639 is a deficient number, since it is larger than the sum of its proper divisors (13703081).

50143639 is a wasteful number, since it uses less digits than its factorization.

50143639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19050.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 50143639 is about 7081.2173388479. The cubic root of 50143639 is about 368.7555929823.

The spelling of 50143639 in words is "fifty million, one hundred forty-three thousand, six hundred thirty-nine".