50987 has 4 divisors (see below), whose sum is σ = 51816. Its totient is φ = 50160.

The previous prime is 50971. The next prime is 50989. The reversal of 50987 is 78905.

It is a happy number.

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 50987 - 2⁴ = 50971 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 50987.

It is not an unprimeable number, because it can be changed into a prime (50989) 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, 314 + ... + 447.

It is an arithmetic number, because the mean of its divisors is an integer number (12954).

2⁵⁰⁹⁸⁷ is an apocalyptic number.

50987 is a deficient number, since it is larger than the sum of its proper divisors (829).

50987 is an equidigital number, since it uses as much as digits as its factorization.

50987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 50987 is about 225.8030114945. The cubic root of 50987 is about 37.0811464715.

The spelling of 50987 in words is "fifty thousand, nine hundred eighty-seven".