52009131 has 4 divisors (see below), whose sum is σ = 69345512. Its totient is φ = 34672752.

The previous prime is 52009123. The next prime is 52009147. The reversal of 52009131 is 13190025.

52009131 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 not a de Polignac number, because 52009131 - 2³ = 52009123 is a prime.

It is a super-2 number, since 2×52009131² = 5409899414750322, 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 = 52009098 and 52009107.

It is not an unprimeable number, because it can be changed into a prime (52009121) 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, 8668186 + ... + 8668191.

It is an arithmetic number, because the mean of its divisors is an integer number (17336378).

Almost surely, 2^52009131 is an apocalyptic number.

52009131 is a deficient number, since it is larger than the sum of its proper divisors (17336381).

52009131 is a wasteful number, since it uses less digits than its factorization.

52009131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17336380.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 52009131 is about 7211.7356440735. The cubic root of 52009131 is about 373.2729615565.

Adding to 52009131 its reverse (13190025), we get a palindrome (65199156).

The spelling of 52009131 in words is "fifty-two million, nine thousand, one hundred thirty-one".