50521000 has 64 divisors (see below), whose sum is σ = 124488000. Its totient is φ = 19137600.

The previous prime is 50520997. The next prime is 50521027. The reversal of 50521000 is 12505.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17671 + ... + 20329.

It is an arithmetic number, because the mean of its divisors is an integer number (1945125).

Almost surely, 2^50521000 is an apocalyptic number.

50521000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50521000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62244000).

50521000 is an abundant number, since it is smaller than the sum of its proper divisors (73967000).

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

50521000 is a wasteful number, since it uses less digits than its factorization.

50521000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699 (or 2685 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 13.

The square root of 50521000 is about 7107.8126030446. The cubic root of 50521000 is about 369.6783179235.

Adding to 50521000 its reverse (12505), we get a palindrome (50533505).

The spelling of 50521000 in words is "fifty million, five hundred twenty-one thousand".