172461 has 4 divisors (see below), whose sum is σ = 229952. Its totient is φ = 114972.

The previous prime is 172441. The next prime is 172489. The reversal of 172461 is 164271.

172461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 172461 - 2¹¹ = 170413 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172411) 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, 28741 + ... + 28746.

It is an arithmetic number, because the mean of its divisors is an integer number (57488).

2¹⁷²⁴⁶¹ is an apocalyptic number.

It is an amenable number.

172461 is a deficient number, since it is larger than the sum of its proper divisors (57491).

172461 is an equidigital number, since it uses as much as digits as its factorization.

172461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57490.

The product of its digits is 336, while the sum is 21.

The square root of 172461 is about 415.2842400092. The cubic root of 172461 is about 55.6626185797.

The spelling of 172461 in words is "one hundred seventy-two thousand, four hundred sixty-one".