172523043 has 48 divisors (see below), whose sum is σ = 313837056. Its totient is φ = 88715520.

The previous prime is 172523033. The next prime is 172523051. The reversal of 172523043 is 340325271.

It is not a de Polignac number, because 172523043 - 2⁵ = 172523011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172522998 and 172523016.

It is not an unprimeable number, because it can be changed into a prime (172523033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70171 + ... + 72587.

It is an arithmetic number, because the mean of its divisors is an integer number (6538272).

Almost surely, 2^172523043 is an apocalyptic number.

172523043 is a deficient number, since it is larger than the sum of its proper divisors (141314013).

172523043 is a wasteful number, since it uses less digits than its factorization.

172523043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544 (or 2541 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 172523043 is about 13134.8027392877. The cubic root of 172523043 is about 556.6929267177.

The spelling of 172523043 in words is "one hundred seventy-two million, five hundred twenty-three thousand, forty-three".