50087521 has 4 divisors (see below), whose sum is σ = 54640944. Its totient is φ = 45534100.

The previous prime is 50087441. The next prime is 50087539. The reversal of 50087521 is 12578005.

50087521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 50087521 - 2¹⁷ = 49956449 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 50087521.

It is not an unprimeable number, because it can be changed into a prime (50087551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276695 + ... + 2276716.

It is an arithmetic number, because the mean of its divisors is an integer number (13660236).

Almost surely, 2^50087521 is an apocalyptic number.

It is an amenable number.

50087521 is a deficient number, since it is larger than the sum of its proper divisors (4553423).

50087521 is a wasteful number, since it uses less digits than its factorization.

50087521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553422.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 50087521 is about 7077.2537753001. The cubic root of 50087521 is about 368.6179779801.

The spelling of 50087521 in words is "fifty million, eighty-seven thousand, five hundred twenty-one".