172330957 has 4 divisors (see below), whose sum is σ = 172827936. Its totient is φ = 171833980.

The previous prime is 172330937. The next prime is 172330979. The reversal of 172330957 is 759033271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 759033271 = 2111 ⋅359561.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172330957 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 (172330937) 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, 247969 + ... + 248662.

It is an arithmetic number, because the mean of its divisors is an integer number (43206984).

Almost surely, 2^172330957 is an apocalyptic number.

It is an amenable number.

172330957 is a deficient number, since it is larger than the sum of its proper divisors (496979).

172330957 is an equidigital number, since it uses as much as digits as its factorization.

172330957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496978.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 172330957 is about 13127.4886021661. The cubic root of 172330957 is about 556.4862439342.

The spelling of 172330957 in words is "one hundred seventy-two million, three hundred thirty thousand, nine hundred fifty-seven".