6602541557 has 2 divisors, whose sum is σ = 6602541558. Its totient is φ = 6602541556.

The previous prime is 6602541503. The next prime is 6602541571. The reversal of 6602541557 is 7551452066.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6553064401 + 49477156 = 80951^2 + 7034^2 .

It is a cyclic number.

It is not a de Polignac number, because 6602541557 - 2²⁶ = 6535432693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6602541577) 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, 3301270778 + 3301270779.

It is an arithmetic number, because the mean of its divisors is an integer number (3301270779).

Almost surely, 2^6602541557 is an apocalyptic number.

It is an amenable number.

6602541557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6602541557 is an equidigital number, since it uses as much as digits as its factorization.

6602541557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 6602541557 is about 81256.0247427845. The cubic root of 6602541557 is about 1876.0182020085.

The spelling of 6602541557 in words is "six billion, six hundred two million, five hundred forty-one thousand, five hundred fifty-seven".