556005001 has 2 divisors, whose sum is σ = 556005002. Its totient is φ = 556005000.

The previous prime is 556004993. The next prime is 556005049. The reversal of 556005001 is 100500655.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382398025 + 173606976 = 19555^2 + 13176^2 .

It is a cyclic number.

It is not a de Polignac number, because 556005001 - 2³ = 556004993 is a prime.

It is a super-2 number, since 2×556005001² = 618283122274020002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (556005071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278002500 + 278002501.

It is an arithmetic number, because the mean of its divisors is an integer number (278002501).

Almost surely, 2^556005001 is an apocalyptic number.

It is an amenable number.

556005001 is a deficient number, since it is larger than the sum of its proper divisors (1).

556005001 is an equidigital number, since it uses as much as digits as its factorization.

556005001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 750, while the sum is 22.

The square root of 556005001 is about 23579.7582896857. The cubic root of 556005001 is about 822.2923172454.

Adding to 556005001 its reverse (100500655), we get a palindrome (656505656).

The spelling of 556005001 in words is "five hundred fifty-six million, five thousand, one".