172874573 has 8 divisors (see below), whose sum is σ = 177452856. Its totient is φ = 168313600.

The previous prime is 172874557. The next prime is 172874591. The reversal of 172874573 is 375478271.

It can be written as a sum of positive squares in 4 ways, for example, as 162409 + 172712164 = 403^2 + 13142^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 172874573 - 2⁴ = 172874557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172874593) 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, 17315 + ... + 25407.

It is an arithmetic number, because the mean of its divisors is an integer number (22181607).

Almost surely, 2^172874573 is an apocalyptic number.

It is an amenable number.

172874573 is a deficient number, since it is larger than the sum of its proper divisors (4578283).

172874573 is an equidigital number, since it uses as much as digits as its factorization.

172874573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8655.

The product of its digits is 329280, while the sum is 44.

The square root of 172874573 is about 13148.1775543229. The cubic root of 172874573 is about 557.0707728630.

The spelling of 172874573 in words is "one hundred seventy-two million, eight hundred seventy-four thousand, five hundred seventy-three".