235445 has 18 divisors (see below), whose sum is σ = 339606. Its totient is φ = 156240.

The previous prime is 235441. The next prime is 235447. The reversal of 235445 is 544532.

It can be written as a sum of positive squares in only one way, i.e., 188356 + 47089 = 434^2 + 217^2 .

It is not a de Polignac number, because 235445 - 2² = 235441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 235445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235441) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7580 + ... + 7610.

It is an arithmetic number, because the mean of its divisors is an integer number (18867).

235445 is a Friedman number, since it can be written as 5*(44*5-3)^2, using all its digits and the basic arithmetic operations.

2²³⁵⁴⁴⁵ is an apocalyptic number.

It is an amenable number.

235445 is a deficient number, since it is larger than the sum of its proper divisors (104161).

235445 is an equidigital number, since it uses as much as digits as its factorization.

235445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 43 counting only the distinct ones).

The product of its digits is 2400, while the sum is 23.

The square root of 235445 is about 485.2267511175. The cubic root of 235445 is about 61.7489851057.

Adding to 235445 its reverse (544532), we get a palindrome (779977).

The spelling of 235445 in words is "two hundred thirty-five thousand, four hundred forty-five".