50515000 has 40 divisors (see below), whose sum is σ = 118368360. Its totient is φ = 20204000.

The previous prime is 50514983. The next prime is 50515037. The reversal of 50515000 is 51505.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 52 + ... + 10051.

It is an arithmetic number, because the mean of its divisors is an integer number (2959209).

Almost surely, 2^50515000 is an apocalyptic number.

50515000 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 50515000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59184180).

50515000 is an abundant number, since it is smaller than the sum of its proper divisors (67853360).

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

50515000 is a wasteful number, since it uses less digits than its factorization.

50515000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10129 (or 10110 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 16.

The square root of 50515000 is about 7107.3905197337. The cubic root of 50515000 is about 369.6636827044.

Adding to 50515000 its reverse (51505), we get a palindrome (50566505).

The spelling of 50515000 in words is "fifty million, five hundred fifteen thousand".