411561 has 10 divisors (see below), whose sum is σ = 614922. Its totient is φ = 274320.

The previous prime is 411557. The next prime is 411563. The reversal of 411561 is 165114.

It can be written as a sum of positive squares in only one way, i.e., 281961 + 129600 = 531^2 + 360^2 .

It is not a de Polignac number, because 411561 - 2² = 411557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (411563) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2460 + ... + 2621.

2⁴¹¹⁵⁶¹ is an apocalyptic number.

It is an amenable number.

411561 is a deficient number, since it is larger than the sum of its proper divisors (203361).

411561 is an equidigital number, since it uses as much as digits as its factorization.

411561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5093 (or 5084 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 411561 is about 641.5302019391. The cubic root of 411561 is about 74.3837503534.

Adding to 411561 its reverse (165114), we get a palindrome (576675).

The spelling of 411561 in words is "four hundred eleven thousand, five hundred sixty-one".