50987840 has 28 divisors (see below), whose sum is σ = 121415556. Its totient is φ = 20395008.

The previous prime is 50987831. The next prime is 50987843. The reversal of 50987840 is 4878905.

It can be written as a sum of positive squares in 2 ways, for example, as 27793984 + 23193856 = 5272^2 + 4816^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50987843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79349 + ... + 79988.

Almost surely, 2^50987840 is an apocalyptic number.

It is an amenable number.

50987840 is an abundant number, since it is smaller than the sum of its proper divisors (70427716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

50987840 is a wasteful number, since it uses less digits than its factorization.

50987840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159354 (or 159344 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 50987840 is about 7140.5770074974. The cubic root of 50987840 is about 370.8135010505.

The spelling of 50987840 in words is "fifty million, nine hundred eighty-seven thousand, eight hundred forty".