180454 has 4 divisors (see below), whose sum is σ = 270684. Its totient is φ = 90226.

The previous prime is 180437. The next prime is 180463. The reversal of 180454 is 454081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454081 = 19 ⋅23899.

It is a super-2 number, since 2×180454² = 65127292232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45112 + ... + 45115.

It is an arithmetic number, because the mean of its divisors is an integer number (67671).

2¹⁸⁰⁴⁵⁴ is an apocalyptic number.

180454 is a deficient number, since it is larger than the sum of its proper divisors (90230).

180454 is an equidigital number, since it uses as much as digits as its factorization.

180454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90229.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 180454 is about 424.7987758928. The cubic root of 180454 is about 56.5095919184.

The spelling of 180454 in words is "one hundred eighty thousand, four hundred fifty-four".