511541 has 2 divisors, whose sum is σ = 511542. Its totient is φ = 511540.

The previous prime is 511523. The next prime is 511549. The reversal of 511541 is 145115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271441 + 240100 = 521^2 + 490^2 .

It is a cyclic number.

It is not a de Polignac number, because 511541 - 2⁶ = 511477 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255770 + 255771.

It is an arithmetic number, because the mean of its divisors is an integer number (255771).

2⁵¹¹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

511541 is a deficient number, since it is larger than the sum of its proper divisors (1).

511541 is an equidigital number, since it uses as much as digits as its factorization.

511541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100, while the sum is 17.

The square root of 511541 is about 715.2209448835. The cubic root of 511541 is about 79.9760866026.

Adding to 511541 its reverse (145115), we get a palindrome (656656).

The spelling of 511541 in words is "five hundred eleven thousand, five hundred forty-one".