52163431 has 4 divisors (see below), whose sum is σ = 53962200. Its totient is φ = 50364664.

The previous prime is 52163413. The next prime is 52163443. The reversal of 52163431 is 13436125.

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 52163431 - 2¹⁹ = 51639143 is a prime.

It is a super-2 number, since 2×52163431² = 5442047067383522, 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 = 52163396 and 52163405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52163411) 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, 899341 + ... + 899398.

It is an arithmetic number, because the mean of its divisors is an integer number (13490550).

Almost surely, 2^52163431 is an apocalyptic number.

52163431 is a deficient number, since it is larger than the sum of its proper divisors (1798769).

52163431 is a wasteful number, since it uses less digits than its factorization.

52163431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798768.

The product of its digits is 2160, while the sum is 25.

The square root of 52163431 is about 7222.4255620948. The cubic root of 52163431 is about 373.6417375271.

Adding to 52163431 its reverse (13436125), we get a palindrome (65599556).

The spelling of 52163431 in words is "fifty-two million, one hundred sixty-three thousand, four hundred thirty-one".