43454 has 4 divisors (see below), whose sum is σ = 65184. Its totient is φ = 21726.

The previous prime is 43451. The next prime is 43457. The reversal of 43454 is 45434.

It is a happy number.

43454 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 45434 = 2 ⋅22717.

It is an interprime number because it is at equal distance from previous prime (43451) and next prime (43457).

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10862 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (16296).

2⁴³⁴⁵⁴ is an apocalyptic number.

43454 is a deficient number, since it is larger than the sum of its proper divisors (21730).

43454 is a wasteful number, since it uses less digits than its factorization.

43454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21729.

The product of its digits is 960, while the sum is 20.

The square root of 43454 is about 208.4562304178. The cubic root of 43454 is about 35.1568470845.

Subtracting from 43454 its sum of digits (20), we obtain a palindrome (43434).

Adding to 43454 its reverse (45434), we get a palindrome (88888).

It can be divided in two parts, 434 and 54, that multiplied together give a triangular number (23436 = T₂₁₆).

The spelling of 43454 in words is "forty-three thousand, four hundred fifty-four".