2155241233 has 2 divisors, whose sum is σ = 2155241234. Its totient is φ = 2155241232.

The previous prime is 2155241201. The next prime is 2155241251. The reversal of 2155241233 is 3321425512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1395246609 + 759994624 = 37353^2 + 27568^2 .

It is a cyclic number.

It is not a de Polignac number, because 2155241233 - 2⁵ = 2155241201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2155271233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077620616 + 1077620617.

It is an arithmetic number, because the mean of its divisors is an integer number (1077620617).

Almost surely, 2^2155241233 is an apocalyptic number.

It is an amenable number.

2155241233 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155241233 is an equidigital number, since it uses as much as digits as its factorization.

2155241233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 2155241233 is about 46424.5757438881. The cubic root of 2155241233 is about 1291.7108148425.

Adding to 2155241233 its reverse (3321425512), we get a palindrome (5476666745).

The spelling of 2155241233 in words is "two billion, one hundred fifty-five million, two hundred forty-one thousand, two hundred thirty-three".