52642131 has 4 divisors (see below), whose sum is σ = 70189512. Its totient is φ = 35094752.

The previous prime is 52642129. The next prime is 52642151. The reversal of 52642131 is 13124625.

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

It is a cyclic number.

It is not a de Polignac number, because 52642131 - 2¹ = 52642129 is a prime.

It is a super-2 number, since 2×52642131² = 5542387912442322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (52642111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8773686 + ... + 8773691.

It is an arithmetic number, because the mean of its divisors is an integer number (17547378).

Almost surely, 2^52642131 is an apocalyptic number.

52642131 is a deficient number, since it is larger than the sum of its proper divisors (17547381).

52642131 is a wasteful number, since it uses less digits than its factorization.

52642131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17547380.

The product of its digits is 1440, while the sum is 24.

The square root of 52642131 is about 7255.4897146919. The cubic root of 52642131 is about 374.7812199411.

Adding to 52642131 its reverse (13124625), we get a palindrome (65766756).

The spelling of 52642131 in words is "fifty-two million, six hundred forty-two thousand, one hundred thirty-one".