52311143 has 4 divisors (see below), whose sum is σ = 53027808. Its totient is φ = 51594480.

The previous prime is 52311107. The next prime is 52311151. The reversal of 52311143 is 34111325.

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-52311143 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 (52310143) 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, 358223 + ... + 358368.

It is an arithmetic number, because the mean of its divisors is an integer number (13256952).

Almost surely, 2^52311143 is an apocalyptic number.

52311143 is a deficient number, since it is larger than the sum of its proper divisors (716665).

52311143 is an equidigital number, since it uses as much as digits as its factorization.

52311143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716664.

The product of its digits is 360, while the sum is 20.

The square root of 52311143 is about 7232.6442605730. The cubic root of 52311143 is about 373.9940875270.

Adding to 52311143 its reverse (34111325), we get a palindrome (86422468).

The spelling of 52311143 in words is "fifty-two million, three hundred eleven thousand, one hundred forty-three".