52812731 has 4 divisors (see below), whose sum is σ = 52836000. Its totient is φ = 52789464.

The previous prime is 52812719. The next prime is 52812737. The reversal of 52812731 is 13721825.

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-52812731 is a prime.

It is a super-2 number, since 2×52812731² = 5578369111356722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 52812694 and 52812703.

It is not an unprimeable number, because it can be changed into a prime (52812737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7811 + ... + 12908.

It is an arithmetic number, because the mean of its divisors is an integer number (13209000).

Almost surely, 2^52812731 is an apocalyptic number.

52812731 is a deficient number, since it is larger than the sum of its proper divisors (23269).

52812731 is a wasteful number, since it uses less digits than its factorization.

52812731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23268.

The product of its digits is 3360, while the sum is 29.

The square root of 52812731 is about 7267.2368201401. The cubic root of 52812731 is about 375.1856408255.

The spelling of 52812731 in words is "fifty-two million, eight hundred twelve thousand, seven hundred thirty-one".