50170140 has 72 divisors (see below), whose sum is σ = 153185760. Its totient is φ = 13290624.

The previous prime is 50170139. The next prime is 50170147. The reversal of 50170140 is 4107105.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50170147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29226 + ... + 30894.

It is an arithmetic number, because the mean of its divisors is an integer number (2127580).

Almost surely, 2^50170140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50170140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76592880).

50170140 is an abundant number, since it is smaller than the sum of its proper divisors (103015620).

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

50170140 is a wasteful number, since it uses less digits than its factorization.

50170140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1846 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 50170140 is about 7083.0883094876. The cubic root of 50170140 is about 368.8205441977.

Adding to 50170140 its reverse (4107105), we get a palindrome (54277245).

The spelling of 50170140 in words is "fifty million, one hundred seventy thousand, one hundred forty".