213574 has 4 divisors (see below), whose sum is σ = 320364. Its totient is φ = 106786.

The previous prime is 213557. The next prime is 213589. The reversal of 213574 is 475312.

213574 is nontrivially palindromic in base 15.

213574 is an esthetic number in base 15, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×213574² = 91227706952, which contains 22 as substring.

213574 is an undulating number in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53392 + ... + 53395.

It is an arithmetic number, because the mean of its divisors is an integer number (80091).

2²¹³⁵⁷⁴ is an apocalyptic number.

213574 is a deficient number, since it is larger than the sum of its proper divisors (106790).

213574 is a wasteful number, since it uses less digits than its factorization.

213574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106789.

The product of its digits is 840, while the sum is 22.

The square root of 213574 is about 462.1406712247. The cubic root of 213574 is about 59.7745241088.

Adding to 213574 its reverse (475312), we get a palindrome (688886).

It can be divided in two parts, 2135 and 74, that added together give a square (2209 = 47²).

The spelling of 213574 in words is "two hundred thirteen thousand, five hundred seventy-four".