50643340 has 72 divisors (see below), whose sum is σ = 123875136. Its totient is φ = 17318400.

The previous prime is 50643301. The next prime is 50643347. The reversal of 50643340 is 4334605.

It is not an unprimeable number, because it can be changed into a prime (50643347) 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, 40525 + ... + 41755.

It is an arithmetic number, because the mean of its divisors is an integer number (1720488).

Almost surely, 2^50643340 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 50643340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61937568).

50643340 is an abundant number, since it is smaller than the sum of its proper divisors (73231796).

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

50643340 is a wasteful number, since it uses less digits than its factorization.

50643340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1266 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 50643340 is about 7116.4134225043. The cubic root of 50643340 is about 369.9764776865.

Adding to 50643340 its reverse (4334605), we get a palindrome (54977945).

The spelling of 50643340 in words is "fifty million, six hundred forty-three thousand, three hundred forty".