50143540 has 24 divisors (see below), whose sum is σ = 111496392. Its totient is φ = 18877440.

The previous prime is 50143529. The next prime is 50143549. The reversal of 50143540 is 4534105.

50143540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 28259856 + 21883684 = 5316^2 + 4678^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50143549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73401 + ... + 74080.

It is an arithmetic number, because the mean of its divisors is an integer number (4645683).

Almost surely, 2^50143540 is an apocalyptic number.

It is an amenable number.

50143540 is an abundant number, since it is smaller than the sum of its proper divisors (61352852).

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

50143540 is a wasteful number, since it uses less digits than its factorization.

50143540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147507 (or 147505 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 50143540 is about 7081.2103485209. The cubic root of 50143540 is about 368.7553503006.

Adding to 50143540 its reverse (4534105), we get a palindrome (54677645).

The spelling of 50143540 in words is "fifty million, one hundred forty-three thousand, five hundred forty".