52156543 has 4 divisors (see below), whose sum is σ = 52226200. Its totient is φ = 52086888.

The previous prime is 52156541. The next prime is 52156547. The reversal of 52156543 is 34565125.

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 52156543 - 2¹ = 52156541 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 (52156541) 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, 33693 + ... + 35206.

It is an arithmetic number, because the mean of its divisors is an integer number (13056550).

Almost surely, 2^52156543 is an apocalyptic number.

52156543 is a deficient number, since it is larger than the sum of its proper divisors (69657).

52156543 is an equidigital number, since it uses as much as digits as its factorization.

52156543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69656.

The product of its digits is 18000, while the sum is 31.

The square root of 52156543 is about 7221.9486982393. The cubic root of 52156543 is about 373.6252907717.

The spelling of 52156543 in words is "fifty-two million, one hundred fifty-six thousand, five hundred forty-three".