43574 has 4 divisors (see below), whose sum is σ = 65364. Its totient is φ = 21786.

The previous prime is 43573. The next prime is 43577. The reversal of 43574 is 47534.

43574 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 an emirpimes, since its reverse is a distinct semiprime: 47534 = 2 ⋅23767.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10892 + ... + 10895.

It is an arithmetic number, because the mean of its divisors is an integer number (16341).

2⁴³⁵⁷⁴ is an apocalyptic number.

43574 is a deficient number, since it is larger than the sum of its proper divisors (21790).

43574 is a wasteful number, since it uses less digits than its factorization.

43574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21789.

The product of its digits is 1680, while the sum is 23.

The square root of 43574 is about 208.7438621852. The cubic root of 43574 is about 35.1891796977.

Adding to 43574 its product of digits (1680), we get a palindrome (45254).

The spelling of 43574 in words is "forty-three thousand, five hundred seventy-four".