2555542261 has 2 divisors, whose sum is σ = 2555542262. Its totient is φ = 2555542260.

The previous prime is 2555542243. The next prime is 2555542337. The reversal of 2555542261 is 1622455552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2306880900 + 248661361 = 48030^2 + 15769^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555542261 - 2⁵ = 2555542229 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2555542261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555542201) 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, 1277771130 + 1277771131.

It is an arithmetic number, because the mean of its divisors is an integer number (1277771131).

Almost surely, 2^2555542261 is an apocalyptic number.

It is an amenable number.

2555542261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555542261 is an equidigital number, since it uses as much as digits as its factorization.

2555542261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120000, while the sum is 37.

The square root of 2555542261 is about 50552.3714676176. The cubic root of 2555542261 is about 1367.1862724258.

The spelling of 2555542261 in words is "two billion, five hundred fifty-five million, five hundred forty-two thousand, two hundred sixty-one".