172454 has 12 divisors (see below), whose sum is σ = 272076. Its totient is φ = 81972.

The previous prime is 172441. The next prime is 172489. The reversal of 172454 is 454271.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

172454 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 977 + ... + 1139.

It is an arithmetic number, because the mean of its divisors is an integer number (22673).

2¹⁷²⁴⁵⁴ is an apocalyptic number.

172454 is a deficient number, since it is larger than the sum of its proper divisors (99622).

172454 is a wasteful number, since it uses less digits than its factorization.

172454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211 (or 188 counting only the distinct ones).

The product of its digits is 1120, while the sum is 23.

The square root of 172454 is about 415.2758119612. The cubic root of 172454 is about 55.6618654749.

It can be divided in two parts, 1724 and 54, that multiplied together give a triangular number (93096 = T₄₃₁).

The spelling of 172454 in words is "one hundred seventy-two thousand, four hundred fifty-four".