50988521 has 4 divisors (see below), whose sum is σ = 52633344. Its totient is φ = 49343700.

The previous prime is 50988481. The next prime is 50988563. The reversal of 50988521 is 12588905.

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 a de Polignac number, because none of the positive numbers 2^k-50988521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50988121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822365 + ... + 822426.

It is an arithmetic number, because the mean of its divisors is an integer number (13158336).

Almost surely, 2^50988521 is an apocalyptic number.

It is an amenable number.

50988521 is a deficient number, since it is larger than the sum of its proper divisors (1644823).

50988521 is a wasteful number, since it uses less digits than its factorization.

50988521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644822.

The product of its (nonzero) digits is 28800, while the sum is 38.

The square root of 50988521 is about 7140.6246925602. The cubic root of 50988521 is about 370.8151519204.

The spelling of 50988521 in words is "fifty million, nine hundred eighty-eight thousand, five hundred twenty-one".