172233257 has 8 divisors (see below), whose sum is σ = 197280000. Its totient is φ = 147297024.

The previous prime is 172233253. The next prime is 172233277. The reversal of 172233257 is 752332271.

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

It is not a de Polignac number, because 172233257 - 2² = 172233253 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172233253) 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, 24257 + ... + 30542.

It is an arithmetic number, because the mean of its divisors is an integer number (24660000).

Almost surely, 2^172233257 is an apocalyptic number.

It is an amenable number.

172233257 is a deficient number, since it is larger than the sum of its proper divisors (25046743).

172233257 is an equidigital number, since it uses as much as digits as its factorization.

172233257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55255.

The product of its digits is 17640, while the sum is 32.

The square root of 172233257 is about 13123.7668754059. The cubic root of 172233257 is about 556.3810606971.

The spelling of 172233257 in words is "one hundred seventy-two million, two hundred thirty-three thousand, two hundred fifty-seven".