50281000 has 128 divisors (see below), whose sum is σ = 146914560. Its totient is φ = 15648000.

The previous prime is 50280991. The next prime is 50281001. The reversal of 50281000 is 18205.

It is a happy number.

It is a super-2 number, since 2×50281000² = 5056357922000000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (50281001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76674 + ... + 77326.

It is an arithmetic number, because the mean of its divisors is an integer number (1147770).

Almost surely, 2^50281000 is an apocalyptic number.

50281000 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 50281000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73457280).

50281000 is an abundant number, since it is smaller than the sum of its proper divisors (96633560).

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

50281000 is a wasteful number, since it uses less digits than its factorization.

50281000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 50281000 is about 7090.9096736596. The cubic root of 50281000 is about 369.0920029205.

Adding to 50281000 its reverse (18205), we get a palindrome (50299205).

The spelling of 50281000 in words is "fifty million, two hundred eighty-one thousand".