50990988 has 12 divisors (see below), whose sum is σ = 118979000. Its totient is φ = 16996992.

The previous prime is 50990983. The next prime is 50991013. The reversal of 50990988 is 88909905.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×50990988² = 5200161714432288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50990981) 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, 2124613 + ... + 2124636.

Almost surely, 2^50990988 is an apocalyptic number.

It is an amenable number.

50990988 is an abundant number, since it is smaller than the sum of its proper divisors (67988012).

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

50990988 is a wasteful number, since it uses less digits than its factorization.

50990988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249256 (or 4249254 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 50990988 is about 7140.7974344607. The cubic root of 50990988 is about 370.8211322614.

The spelling of 50990988 in words is "fifty million, nine hundred ninety thousand, nine hundred eighty-eight".