52172823 has 8 divisors (see below), whose sum is σ = 69597568. Its totient is φ = 34764984.

The previous prime is 52172807. The next prime is 52172831. The reversal of 52172823 is 32827125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 52172823 - 2⁴ = 52172807 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 (52172843) 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 7 ways as a sum of consecutive naturals, for example, 8190 + ... + 13092.

It is an arithmetic number, because the mean of its divisors is an integer number (8699696).

Almost surely, 2^52172823 is an apocalyptic number.

52172823 is a deficient number, since it is larger than the sum of its proper divisors (17424745).

52172823 is a wasteful number, since it uses less digits than its factorization.

52172823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8453.

The product of its digits is 6720, while the sum is 30.

The square root of 52172823 is about 7223.0757299090. The cubic root of 52172823 is about 373.6641608516.

Adding to 52172823 its reverse (32827125), we get a palindrome (84999948).

The spelling of 52172823 in words is "fifty-two million, one hundred seventy-two thousand, eight hundred twenty-three".