2155241201 has 2 divisors, whose sum is σ = 2155241202. Its totient is φ = 2155241200.

The previous prime is 2155241189. The next prime is 2155241233. The reversal of 2155241201 is 1021425512.

2155241201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2147395600 + 7845601 = 46340^2 + 2801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155241201 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 (2155241251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077620600 + 1077620601.

It is an arithmetic number, because the mean of its divisors is an integer number (1077620601).

Almost surely, 2^2155241201 is an apocalyptic number.

It is an amenable number.

2155241201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155241201 is an equidigital number, since it uses as much as digits as its factorization.

2155241201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2155241201 is about 46424.5753992430. The cubic root of 2155241201 is about 1291.7108084496.

Adding to 2155241201 its reverse (1021425512), we get a palindrome (3176666713).

The spelling of 2155241201 in words is "two billion, one hundred fifty-five million, two hundred forty-one thousand, two hundred one".