213575 has 6 divisors (see below), whose sum is σ = 264864. Its totient is φ = 170840.

The previous prime is 213557. The next prime is 213589. The reversal of 213575 is 575312.

It is not a de Polignac number, because 213575 - 2⁸ = 213319 is a prime.

It is a super-2 number, since 2×213575² = 91228561250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213575.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4247 + ... + 4296.

It is an arithmetic number, because the mean of its divisors is an integer number (44144).

2²¹³⁵⁷⁵ is an apocalyptic number.

213575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

213575 is a deficient number, since it is larger than the sum of its proper divisors (51289).

213575 is an equidigital number, since it uses as much as digits as its factorization.

213575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8553 (or 8548 counting only the distinct ones).

The product of its digits is 1050, while the sum is 23.

The square root of 213575 is about 462.1417531451. The cubic root of 213575 is about 59.7746174011.

Adding to 213575 its reverse (575312), we get a palindrome (788887).

The spelling of 213575 in words is "two hundred thirteen thousand, five hundred seventy-five".