50317987 has 4 divisors (see below), whose sum is σ = 52053120. Its totient is φ = 48582856.

The previous prime is 50317979. The next prime is 50318027. The reversal of 50317987 is 78971305.

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 50317987 - 2³ = 50317979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50317907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867523 + ... + 867580.

It is an arithmetic number, because the mean of its divisors is an integer number (13013280).

Almost surely, 2^50317987 is an apocalyptic number.

50317987 is a deficient number, since it is larger than the sum of its proper divisors (1735133).

50317987 is a wasteful number, since it uses less digits than its factorization.

50317987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735132.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 50317987 is about 7093.5172516883. The cubic root of 50317987 is about 369.1824828227.

The spelling of 50317987 in words is "fifty million, three hundred seventeen thousand, nine hundred eighty-seven".