2155523063 has 2 divisors, whose sum is σ = 2155523064. Its totient is φ = 2155523062.

The previous prime is 2155523047. The next prime is 2155523081. The reversal of 2155523063 is 3603255512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2155523063 - 2⁴ = 2155523047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155523033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077761531 + 1077761532.

It is an arithmetic number, because the mean of its divisors is an integer number (1077761532).

Almost surely, 2^2155523063 is an apocalyptic number.

2155523063 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155523063 is an equidigital number, since it uses as much as digits as its factorization.

2155523063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 2155523063 is about 46427.6109981980. The cubic root of 2155523063 is about 1291.7671158861.

Adding to 2155523063 its reverse (3603255512), we get a palindrome (5758778575).

The spelling of 2155523063 in words is "two billion, one hundred fifty-five million, five hundred twenty-three thousand, sixty-three".