2105535251 has 2 divisors, whose sum is σ = 2105535252. Its totient is φ = 2105535250.

The previous prime is 2105535199. The next prime is 2105535259. The reversal of 2105535251 is 1525355012.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105535251 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2105535259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052767625 + 1052767626.

It is an arithmetic number, because the mean of its divisors is an integer number (1052767626).

Almost surely, 2^2105535251 is an apocalyptic number.

2105535251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105535251 is an equidigital number, since it uses as much as digits as its factorization.

2105535251 is an evil number, because the sum of its binary digits is even.

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

The square root of 2105535251 is about 45886.1117441868. Note that the first 3 decimals coincide. The cubic root of 2105535251 is about 1281.7033091658.

The spelling of 2105535251 in words is "two billion, one hundred five million, five hundred thirty-five thousand, two hundred fifty-one".