172130458 has 4 divisors (see below), whose sum is σ = 258195690. Its totient is φ = 86065228.

The previous prime is 172130447. The next prime is 172130467. The reversal of 172130458 is 854031271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 86992929 + 85137529 = 9327^2 + 9227^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43032613 + ... + 43032616.

Almost surely, 2^172130458 is an apocalyptic number.

172130458 is a deficient number, since it is larger than the sum of its proper divisors (86065232).

172130458 is an equidigital number, since it uses as much as digits as its factorization.

172130458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86065231.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 172130458 is about 13119.8497704814. The cubic root of 172130458 is about 556.2703449530.

The spelling of 172130458 in words is "one hundred seventy-two million, one hundred thirty thousand, four hundred fifty-eight".