240545 has 4 divisors (see below), whose sum is σ = 288660. Its totient is φ = 192432.

The previous prime is 240517. The next prime is 240551. The reversal of 240545 is 545042.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 130321 = 332^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 240545 - 2¹⁰ = 239521 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24050 + ... + 24059.

It is an arithmetic number, because the mean of its divisors is an integer number (72165).

2²⁴⁰⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

240545 is a deficient number, since it is larger than the sum of its proper divisors (48115).

240545 is an equidigital number, since it uses as much as digits as its factorization.

240545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48114.

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 240545 is about 490.4538714293. The cubic root of 240545 is about 62.1916546049.

Adding to 240545 its reverse (545042), we get a palindrome (785587).

The spelling of 240545 in words is "two hundred forty thousand, five hundred forty-five".