541544609 has 2 divisors, whose sum is σ = 541544610. Its totient is φ = 541544608.

The previous prime is 541544581. The next prime is 541544629. The reversal of 541544609 is 906445145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400600225 + 140944384 = 20015^2 + 11872^2 .

It is a cyclic number.

It is not a de Polignac number, because 541544609 - 2¹⁶ = 541479073 is a prime.

It is not a weakly prime, because it can be changed into another prime (541544629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270772304 + 270772305.

It is an arithmetic number, because the mean of its divisors is an integer number (270772305).

Almost surely, 2^541544609 is an apocalyptic number.

It is an amenable number.

541544609 is a deficient number, since it is larger than the sum of its proper divisors (1).

541544609 is an equidigital number, since it uses as much as digits as its factorization.

541544609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 541544609 is about 23271.1110392263. Note that the first 3 decimals coincide. The cubic root of 541544609 is about 815.1009743537.

The spelling of 541544609 in words is "five hundred forty-one million, five hundred forty-four thousand, six hundred nine".