172125458 has 6 divisors (see below), whose sum is σ = 258216021. Its totient is φ = 86053452.

The previous prime is 172125439. The next prime is 172125461. The reversal of 172125458 is 854521271.

It can be written as a sum of positive squares in 2 ways, for example, as 152349649 + 19775809 = 12343^2 + 4447^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9277.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 13916 + ... + 23192.

Almost surely, 2^172125458 is an apocalyptic number.

172125458 is a deficient number, since it is larger than the sum of its proper divisors (86090563).

172125458 is an frugal number, since it uses more digits than its factorization.

172125458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18556 (or 9279 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The square root of 172125458 is about 13119.6592181352. The cubic root of 172125458 is about 556.2649587695.

The spelling of 172125458 in words is "one hundred seventy-two million, one hundred twenty-five thousand, four hundred fifty-eight".