1555835752253 has 2 divisors, whose sum is σ = 1555835752254. Its totient is φ = 1555835752252.

The previous prime is 1555835752249. The next prime is 1555835752259. The reversal of 1555835752253 is 3522575385551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819745538404 + 736090213849 = 905398^2 + 857957^2 .

It is a cyclic number.

It is not a de Polignac number, because 1555835752253 - 2² = 1555835752249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1555835752259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777917876126 + 777917876127.

It is an arithmetic number, because the mean of its divisors is an integer number (777917876127).

Almost surely, 2^{1555835752253} is an apocalyptic number.

It is an amenable number.

1555835752253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1555835752253 is an equidigital number, since it uses as much as digits as its factorization.

1555835752253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31500000, while the sum is 56.

The spelling of 1555835752253 in words is "one trillion, five hundred fifty-five billion, eight hundred thirty-five million, seven hundred fifty-two thousand, two hundred fifty-three".