50987520 has 120 divisors (see below), whose sum is σ = 176663916. Its totient is φ = 13590528.

The previous prime is 50987473. The next prime is 50987549. The reversal of 50987520 is 2578905.

Added to its reverse (2578905) it gives a triangular number (53566425 = T₁₀₃₅₀).

50987520 is a `hidden beast` number, since 50 + 9 + 87 + 520 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 47114496 + 3873024 = 6864^2 + 1968^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21934 + ... + 24146.

Almost surely, 2^50987520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50987520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88331958).

50987520 is an abundant number, since it is smaller than the sum of its proper divisors (125676396).

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

50987520 is a wasteful number, since it uses less digits than its factorization.

50987520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242 (or 2223 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 50987520 is about 7140.5546003094. The cubic root of 50987520 is about 370.8127253063.

Adding to 50987520 its reverse (2578905), we get a triangular number (53566425 = T₁₀₃₅₀).

The spelling of 50987520 in words is "fifty million, nine hundred eighty-seven thousand, five hundred twenty".