75543140 has 12 divisors (see below), whose sum is σ = 158640636. Its totient is φ = 30217248.

The previous prime is 75543133. The next prime is 75543151. The reversal of 75543140 is 4134557.

It can be written as a sum of positive squares in 2 ways, for example, as 15697444 + 59845696 = 3962^2 + 7736^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888559 + ... + 1888598.

It is an arithmetic number, because the mean of its divisors is an integer number (13220053).

Almost surely, 2^75543140 is an apocalyptic number.

It is an amenable number.

75543140 is an abundant number, since it is smaller than the sum of its proper divisors (83097496).

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

75543140 is a wasteful number, since it uses less digits than its factorization.

75543140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3777166 (or 3777164 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 75543140 is about 8691.5556720302. Note that the first 3 decimals coincide. The cubic root of 75543140 is about 422.7318895567.

Adding to 75543140 its reverse (4134557), we get a palindrome (79677697).

The spelling of 75543140 in words is "seventy-five million, five hundred forty-three thousand, one hundred forty".