53775143 has 4 divisors (see below), whose sum is σ = 54136200. Its totient is φ = 53414088.

The previous prime is 53775133. The next prime is 53775157. The reversal of 53775143 is 34157735.

53775143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53775143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53775133) 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 3 ways as a sum of consecutive naturals, for example, 180305 + ... + 180602.

It is an arithmetic number, because the mean of its divisors is an integer number (13534050).

Almost surely, 2^53775143 is an apocalyptic number.

53775143 is a deficient number, since it is larger than the sum of its proper divisors (361057).

53775143 is a wasteful number, since it uses less digits than its factorization.

53775143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361056.

The product of its digits is 44100, while the sum is 35.

The square root of 53775143 is about 7333.1536871935. The cubic root of 53775143 is about 377.4509516264.

The spelling of 53775143 in words is "fifty-three million, seven hundred seventy-five thousand, one hundred forty-three".