52172543 has 4 divisors (see below), whose sum is σ = 52187160. Its totient is φ = 52157928.

The previous prime is 52172531. The next prime is 52172557. The reversal of 52172543 is 34527125.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52172543 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 (52172503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988 + ... + 10406.

It is an arithmetic number, because the mean of its divisors is an integer number (13046790).

Almost surely, 2^52172543 is an apocalyptic number.

52172543 is a deficient number, since it is larger than the sum of its proper divisors (14617).

52172543 is an equidigital number, since it uses as much as digits as its factorization.

52172543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14616.

The product of its digits is 8400, while the sum is 29.

The square root of 52172543 is about 7223.0563475581. The cubic root of 52172543 is about 373.6634923927.

Adding to 52172543 its reverse (34527125), we get a palindrome (86699668).

The spelling of 52172543 in words is "fifty-two million, one hundred seventy-two thousand, five hundred forty-three".