2541155009 has 2 divisors, whose sum is σ = 2541155010. Its totient is φ = 2541155008.

The previous prime is 2541155003. The next prime is 2541155011. The reversal of 2541155009 is 9005511452.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2296326400 + 244828609 = 47920^2 + 15647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2541155009 is a prime.

Together with 2541155011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2541155003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1270577504 + 1270577505.

It is an arithmetic number, because the mean of its divisors is an integer number (1270577505).

Almost surely, 2^2541155009 is an apocalyptic number.

It is an amenable number.

2541155009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2541155009 is an equidigital number, since it uses as much as digits as its factorization.

2541155009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9000, while the sum is 32.

The square root of 2541155009 is about 50409.8701545640. The cubic root of 2541155009 is about 1364.6157700584.

The spelling of 2541155009 in words is "two billion, five hundred forty-one million, one hundred fifty-five thousand, nine".