2141545541 has 2 divisors, whose sum is σ = 2141545542. Its totient is φ = 2141545540.

The previous prime is 2141545493. The next prime is 2141545543. The reversal of 2141545541 is 1455451412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2083557316 + 57988225 = 45646^2 + 7615^2 .

It is a cyclic number.

It is not a de Polignac number, because 2141545541 - 2³⁰ = 1067803717 is a prime.

It is a Sophie Germain prime.

Together with 2141545543, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2141545498 and 2141545507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2141545543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070772770 + 1070772771.

It is an arithmetic number, because the mean of its divisors is an integer number (1070772771).

Almost surely, 2^2141545541 is an apocalyptic number.

It is an amenable number.

2141545541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2141545541 is an equidigital number, since it uses as much as digits as its factorization.

2141545541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16000, while the sum is 32.

The square root of 2141545541 is about 46276.8359009127. The cubic root of 2141545541 is about 1288.9688976264.

Adding to 2141545541 its reverse (1455451412), we get a palindrome (3596996953).

The spelling of 2141545541 in words is "two billion, one hundred forty-one million, five hundred forty-five thousand, five hundred forty-one".