5541205409 has 2 divisors, whose sum is σ = 5541205410. Its totient is φ = 5541205408.

The previous prime is 5541205399. The next prime is 5541205427. The reversal of 5541205409 is 9045021455.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4108810000 + 1432395409 = 64100^2 + 37847^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5541205409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (5541205459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770602704 + 2770602705.

It is an arithmetic number, because the mean of its divisors is an integer number (2770602705).

Almost surely, 2^5541205409 is an apocalyptic number.

It is an amenable number.

5541205409 is a deficient number, since it is larger than the sum of its proper divisors (1).

5541205409 is an equidigital number, since it uses as much as digits as its factorization.

5541205409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 5541205409 is about 74439.2732970977. The cubic root of 5541205409 is about 1769.5713698177.

The spelling of 5541205409 in words is "five billion, five hundred forty-one million, two hundred five thousand, four hundred nine".