2555671549 has 2 divisors, whose sum is σ = 2555671550. Its totient is φ = 2555671548.

The previous prime is 2555671477. The next prime is 2555671561. The reversal of 2555671549 is 9451765552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2547220900 + 8450649 = 50470^2 + 2907^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555671549 - 2²⁷ = 2421453821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555671849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277835774 + 1277835775.

It is an arithmetic number, because the mean of its divisors is an integer number (1277835775).

Almost surely, 2^2555671549 is an apocalyptic number.

It is an amenable number.

2555671549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555671549 is an equidigital number, since it uses as much as digits as its factorization.

2555671549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1890000, while the sum is 49.

The square root of 2555671549 is about 50553.6502045105. The cubic root of 2555671549 is about 1367.2093279107.

The spelling of 2555671549 in words is "two billion, five hundred fifty-five million, six hundred seventy-one thousand, five hundred forty-nine".