2556071201 has 2 divisors, whose sum is σ = 2556071202. Its totient is φ = 2556071200.

The previous prime is 2556071191. The next prime is 2556071209. The reversal of 2556071201 is 1021706552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1628929600 + 927141601 = 40360^2 + 30449^2 .

It is a cyclic number.

It is not a de Polignac number, because 2556071201 - 2⁶ = 2556071137 is a prime.

It is not a weakly prime, because it can be changed into another prime (2556071209) 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, 1278035600 + 1278035601.

It is an arithmetic number, because the mean of its divisors is an integer number (1278035601).

Almost surely, 2^2556071201 is an apocalyptic number.

It is an amenable number.

2556071201 is a deficient number, since it is larger than the sum of its proper divisors (1).

2556071201 is an equidigital number, since it uses as much as digits as its factorization.

2556071201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 2556071201 is about 50557.6028011614. The cubic root of 2556071201 is about 1367.2805915626.

Adding to 2556071201 its reverse (1021706552), we get a palindrome (3577777753).

The spelling of 2556071201 in words is "two billion, five hundred fifty-six million, seventy-one thousand, two hundred one".