2555503997 has 2 divisors, whose sum is σ = 2555503998. Its totient is φ = 2555503996.

The previous prime is 2555503981. The next prime is 2555504011. The reversal of 2555503997 is 7993055552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2530693636 + 24810361 = 50306^2 + 4981^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555503997 - 2⁴ = 2555503981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555503967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277751998 + 1277751999.

It is an arithmetic number, because the mean of its divisors is an integer number (1277751999).

Almost surely, 2^2555503997 is an apocalyptic number.

It is an amenable number.

2555503997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555503997 is an equidigital number, since it uses as much as digits as its factorization.

2555503997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2126250, while the sum is 50.

The square root of 2555503997 is about 50551.9930072000. The cubic root of 2555503997 is about 1367.1794487890.

The spelling of 2555503997 in words is "two billion, five hundred fifty-five million, five hundred three thousand, nine hundred ninety-seven".