50815000 has 40 divisors (see below), whose sum is σ = 119071260. Its totient is φ = 20324000.

The previous prime is 50814991. The next prime is 50815001. The reversal of 50815000 is 51805.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50815001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 82 + ... + 10081.

Almost surely, 2^50815000 is an apocalyptic number.

50815000 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 50815000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59535630).

50815000 is an abundant number, since it is smaller than the sum of its proper divisors (68256260).

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

50815000 is a wasteful number, since it uses less digits than its factorization.

50815000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10189 (or 10170 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 50815000 is about 7128.4640701907. The cubic root of 50815000 is about 370.3940287356.

Adding to 50815000 its reverse (51805), we get a palindrome (50866805).

The spelling of 50815000 in words is "fifty million, eight hundred fifteen thousand".