50986999 has 12 divisors (see below), whose sum is σ = 60916584. Its totient is φ = 42520464.

The previous prime is 50986997. The next prime is 50987003. The reversal of 50986999 is 99968905.

It is not a de Polignac number, because 50986999 - 2¹ = 50986997 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 (50986993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12249 + ... + 15874.

It is an arithmetic number, because the mean of its divisors is an integer number (5076382).

Almost surely, 2^50986999 is an apocalyptic number.

50986999 is a deficient number, since it is larger than the sum of its proper divisors (9929585).

50986999 is a wasteful number, since it uses less digits than its factorization.

50986999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28174 (or 28167 counting only the distinct ones).

The product of its (nonzero) digits is 1574640, while the sum is 55.

The square root of 50986999 is about 7140.5181184561. The cubic root of 50986999 is about 370.8114622907.

The spelling of 50986999 in words is "fifty million, nine hundred eighty-six thousand, nine hundred ninety-nine".