506545541 has 2 divisors, whose sum is σ = 506545542. Its totient is φ = 506545540.

The previous prime is 506545531. The next prime is 506545579. The reversal of 506545541 is 145545605.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434889316 + 71656225 = 20854^2 + 8465^2 .

It is a cyclic number.

It is not a de Polignac number, because 506545541 - 2¹⁰ = 506544517 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 (506545531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253272770 + 253272771.

It is an arithmetic number, because the mean of its divisors is an integer number (253272771).

Almost surely, 2^506545541 is an apocalyptic number.

It is an amenable number.

506545541 is a deficient number, since it is larger than the sum of its proper divisors (1).

506545541 is an equidigital number, since it uses as much as digits as its factorization.

506545541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60000, while the sum is 35.

The square root of 506545541 is about 22506.5666195446. The cubic root of 506545541 is about 797.1489876680.

The spelling of 506545541 in words is "five hundred six million, five hundred forty-five thousand, five hundred forty-one".