2159455541 has 2 divisors, whose sum is σ = 2159455542. Its totient is φ = 2159455540.

The previous prime is 2159455523. The next prime is 2159455589. The reversal of 2159455541 is 1455549512.

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., 1926771025 + 232684516 = 43895^2 + 15254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2159455541 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 (2159455591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079727770 + 1079727771.

It is an arithmetic number, because the mean of its divisors is an integer number (1079727771).

Almost surely, 2^2159455541 is an apocalyptic number.

It is an amenable number.

2159455541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159455541 is an equidigital number, since it uses as much as digits as its factorization.

2159455541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180000, while the sum is 41.

The square root of 2159455541 is about 46469.9423391078. The cubic root of 2159455541 is about 1292.5521936554.

The spelling of 2159455541 in words is "two billion, one hundred fifty-nine million, four hundred fifty-five thousand, five hundred forty-one".