6555131057 has 2 divisors, whose sum is σ = 6555131058. Its totient is φ = 6555131056.

The previous prime is 6555131021. The next prime is 6555131083. The reversal of 6555131057 is 7501315556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3439705201 + 3115425856 = 58649^2 + 55816^2 .

It is a cyclic number.

It is not a de Polignac number, because 6555131057 - 2¹⁰ = 6555130033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6555131057.

It is not a weakly prime, because it can be changed into another prime (6555181057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277565528 + 3277565529.

It is an arithmetic number, because the mean of its divisors is an integer number (3277565529).

Almost surely, 2^6555131057 is an apocalyptic number.

It is an amenable number.

6555131057 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555131057 is an equidigital number, since it uses as much as digits as its factorization.

6555131057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78750, while the sum is 38.

The square root of 6555131057 is about 80963.7638514910. The cubic root of 6555131057 is about 1871.5170715071.

The spelling of 6555131057 in words is "six billion, five hundred fifty-five million, one hundred thirty-one thousand, fifty-seven".