172937473 has 4 divisors (see below), whose sum is σ = 172965888. Its totient is φ = 172909060.

The previous prime is 172937461. The next prime is 172937477. The reversal of 172937473 is 374739271.

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.

It is a cyclic number.

It is not a de Polignac number, because 172937473 - 2⁵ = 172937441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172937477) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 961 + ... + 18622.

It is an arithmetic number, because the mean of its divisors is an integer number (43241472).

Almost surely, 2^172937473 is an apocalyptic number.

It is an amenable number.

172937473 is a deficient number, since it is larger than the sum of its proper divisors (28415).

172937473 is an equidigital number, since it uses as much as digits as its factorization.

172937473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28414.

The product of its digits is 222264, while the sum is 43.

The square root of 172937473 is about 13150.5693032659. The cubic root of 172937473 is about 557.1383276267.

The spelling of 172937473 in words is "one hundred seventy-two million, nine hundred thirty-seven thousand, four hundred seventy-three".