555012001 has 2 divisors, whose sum is σ = 555012002. Its totient is φ = 555012000.

The previous prime is 555011999. The next prime is 555012019. The reversal of 555012001 is 100210555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415181376 + 139830625 = 20376^2 + 11825^2 .

It is a cyclic number.

It is not a de Polignac number, because 555012001 - 2¹ = 555011999 is a prime.

Together with 555011999, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 555012001.

It is not a weakly prime, because it can be changed into another prime (555012301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277506000 + 277506001.

It is an arithmetic number, because the mean of its divisors is an integer number (277506001).

Almost surely, 2^555012001 is an apocalyptic number.

It is an amenable number.

555012001 is a deficient number, since it is larger than the sum of its proper divisors (1).

555012001 is an equidigital number, since it uses as much as digits as its factorization.

555012001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 555012001 is about 23558.6926844424. The cubic root of 555012001 is about 821.8024997968.

Adding to 555012001 its reverse (100210555), we get a palindrome (655222556).

The spelling of 555012001 in words is "five hundred fifty-five million, twelve thousand, one".