50440000 has 140 divisors (see below), whose sum is σ = 136084564. Its totient is φ = 18432000.

The previous prime is 50439979. The next prime is 50440001. The reversal of 50440000 is 4405.

It can be written as a sum of positive squares in 10 ways, for example, as 46566976 + 3873024 = 6824^2 + 1968^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50440001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 519952 + ... + 520048.

Almost surely, 2^50440000 is an apocalyptic number.

50440000 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 50440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68042282).

50440000 is an abundant number, since it is smaller than the sum of its proper divisors (85644564).

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

50440000 is an equidigital number, since it uses as much as digits as its factorization.

50440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 50440000 is about 7102.1123618259. The cubic root of 50440000 is about 369.4806446062.

Adding to 50440000 its reverse (4405), we get a palindrome (50444405).

It can be divided in two parts, 504 and 40000, that added together give a palindrome (40504).

The spelling of 50440000 in words is "fifty million, four hundred forty thousand".