655441 has 4 divisors (see below), whose sum is σ = 657972. Its totient is φ = 652912.

The previous prime is 655439. The next prime is 655453. The reversal of 655441 is 144556.

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 577600 + 77841 = 760^2 + 279^2 .

It is a cyclic number.

It is not a de Polignac number, because 655441 - 2¹ = 655439 is a prime.

It is a Duffinian number.

655441 is a lucky number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (655471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826 + ... + 1411.

It is an arithmetic number, because the mean of its divisors is an integer number (164493).

2⁶⁵⁵⁴⁴¹ is an apocalyptic number.

It is an amenable number.

655441 is a deficient number, since it is larger than the sum of its proper divisors (2531).

655441 is a wasteful number, since it uses less digits than its factorization.

655441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530.

The product of its digits is 2400, while the sum is 25.

The square root of 655441 is about 809.5931076782. The cubic root of 655441 is about 86.8649421615.

Adding to 655441 its reverse (144556), we get a palindrome (799997).

The spelling of 655441 in words is "six hundred fifty-five thousand, four hundred forty-one".