2102555513 has 2 divisors, whose sum is σ = 2102555514. Its totient is φ = 2102555512.

The previous prime is 2102555473. The next prime is 2102555519. The reversal of 2102555513 is 3155552012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2054627584 + 47927929 = 45328^2 + 6923^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102555513 - 2²⁰ = 2101506937 is a prime.

It is not a weakly prime, because it can be changed into another prime (2102555519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051277756 + 1051277757.

It is an arithmetic number, because the mean of its divisors is an integer number (1051277757).

Almost surely, 2^2102555513 is an apocalyptic number.

It is an amenable number.

2102555513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102555513 is an equidigital number, since it uses as much as digits as its factorization.

2102555513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 2102555513 is about 45853.6314047208. The cubic root of 2102555513 is about 1281.0984046920.

The spelling of 2102555513 in words is "two billion, one hundred two million, five hundred fifty-five thousand, five hundred thirteen".