555055501001 has 2 divisors, whose sum is σ = 555055501002. Its totient is φ = 555055501000.

The previous prime is 555055500997. The next prime is 555055501003. The reversal of 555055501001 is 100105550555.

555055501001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 474783012025 + 80272488976 = 689045^2 + 283324^2 .

It is a cyclic number.

It is not a de Polignac number, because 555055501001 - 2² = 555055500997 is a prime.

It is a super-2 number, since 2×555055501001² (a number of 24 digits) contains 22 as substring.

Together with 555055501003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (555055501003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277527750500 + 277527750501.

It is an arithmetic number, because the mean of its divisors is an integer number (277527750501).

Almost surely, 2^555055501001 is an apocalyptic number.

It is an amenable number.

555055501001 is a deficient number, since it is larger than the sum of its proper divisors (1).

555055501001 is an equidigital number, since it uses as much as digits as its factorization.

555055501001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15625, while the sum is 32.

The spelling of 555055501001 in words is "five hundred fifty-five billion, fifty-five million, five hundred one thousand, one".