172559 has 4 divisors (see below), whose sum is σ = 176616. Its totient is φ = 168504.

The previous prime is 172553. The next prime is 172561. The reversal of 172559 is 955271.

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

It is a cyclic number.

It is not a de Polignac number, because 172559 - 2¹² = 168463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964 + ... + 2049.

It is an arithmetic number, because the mean of its divisors is an integer number (44154).

2¹⁷²⁵⁵⁹ is an apocalyptic number.

172559 is a deficient number, since it is larger than the sum of its proper divisors (4057).

172559 is an equidigital number, since it uses as much as digits as its factorization.

172559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4056.

The product of its digits is 3150, while the sum is 29.

The square root of 172559 is about 415.4022147269. The cubic root of 172559 is about 55.6731599073.

The spelling of 172559 in words is "one hundred seventy-two thousand, five hundred fifty-nine".