172487 has 8 divisors (see below), whose sum is σ = 202272. Its totient is φ = 144000.

The previous prime is 172441. The next prime is 172489. The reversal of 172487 is 784271.

172487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 172487 - 2⁶ = 172423 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 172487.

It is not an unprimeable number, because it can be changed into a prime (172489) 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, 14 + ... + 587.

It is an arithmetic number, because the mean of its divisors is an integer number (25284).

2¹⁷²⁴⁸⁷ is an apocalyptic number.

172487 is a deficient number, since it is larger than the sum of its proper divisors (29785).

172487 is an equidigital number, since it uses as much as digits as its factorization.

172487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649.

The product of its digits is 3136, while the sum is 29.

The square root of 172487 is about 415.3155426901. The cubic root of 172487 is about 55.6654156475.

The spelling of 172487 in words is "one hundred seventy-two thousand, four hundred eighty-seven".