50405140 has 12 divisors (see below), whose sum is σ = 105850836. Its totient is φ = 20162048.

The previous prime is 50405129. The next prime is 50405149. The reversal of 50405140 is 4150405.

It can be written as a sum of positive squares in 2 ways, for example, as 35070084 + 15335056 = 5922^2 + 3916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50405149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260109 + ... + 1260148.

It is an arithmetic number, because the mean of its divisors is an integer number (8820903).

Almost surely, 2^50405140 is an apocalyptic number.

It is an amenable number.

50405140 is an abundant number, since it is smaller than the sum of its proper divisors (55445696).

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

50405140 is a wasteful number, since it uses less digits than its factorization.

50405140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2520266 (or 2520264 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 50405140 is about 7099.6577382294. The cubic root of 50405140 is about 369.3955067286.

Adding to 50405140 its reverse (4150405), we get a palindrome (54555545).

The spelling of 50405140 in words is "fifty million, four hundred five thousand, one hundred forty".