50217840 has 160 divisors (see below), whose sum is σ = 176060160. Its totient is φ = 13153536.

The previous prime is 50217793. The next prime is 50217841. The reversal of 50217840 is 4871205.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50217841) 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, 144547 + ... + 144893.

It is an arithmetic number, because the mean of its divisors is an integer number (1100376).

Almost surely, 2^50217840 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 50217840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88030080).

50217840 is an abundant number, since it is smaller than the sum of its proper divisors (125842320).

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

50217840 is a wasteful number, since it uses less digits than its factorization.

50217840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 50217840 is about 7086.4546848195. The cubic root of 50217840 is about 368.9373943625.

The spelling of 50217840 in words is "fifty million, two hundred seventeen thousand, eight hundred forty".