172523056 has 40 divisors (see below), whose sum is σ = 342098640. Its totient is φ = 84254976.

The previous prime is 172523051. The next prime is 172523081. The reversal of 172523056 is 650325271.

It is not an unprimeable number, because it can be changed into a prime (172523051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329611 + ... + 330133.

It is an arithmetic number, because the mean of its divisors is an integer number (8552466).

Almost surely, 2^172523056 is an apocalyptic number.

172523056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172523056 is a deficient number, since it is larger than the sum of its proper divisors (169575584).

172523056 is a wasteful number, since it uses less digits than its factorization.

172523056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 967 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 172523056 is about 13134.8032341562. The cubic root of 172523056 is about 556.6929407003.

The spelling of 172523056 in words is "one hundred seventy-two million, five hundred twenty-three thousand, fifty-six".