50205440 has 72 divisors (see below), whose sum is σ = 122419248. Its totient is φ = 19722240.

The previous prime is 50205439. The next prime is 50205451. The reversal of 50205440 is 4450205.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77759 + ... + 78401.

Almost surely, 2^50205440 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 50205440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61209624).

50205440 is an abundant number, since it is smaller than the sum of its proper divisors (72213808).

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

50205440 is an equidigital number, since it uses as much as digits as its factorization.

50205440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 50205440 is about 7085.5797222246. The cubic root of 50205440 is about 368.9070253391.

Adding to 50205440 its reverse (4450205), we get a palindrome (54655645).

The spelling of 50205440 in words is "fifty million, two hundred five thousand, four hundred forty".