7057755557 has 2 divisors, whose sum is σ = 7057755558. Its totient is φ = 7057755556.

The previous prime is 7057755541. The next prime is 7057755583. The reversal of 7057755557 is 7555577507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6069344836 + 988410721 = 77906^2 + 31439^2 .

It is a cyclic number.

It is not a de Polignac number, because 7057755557 - 2⁴ = 7057755541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7057755499 and 7057755508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7057755527) 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, 3528877778 + 3528877779.

It is an arithmetic number, because the mean of its divisors is an integer number (3528877779).

Almost surely, 2^7057755557 is an apocalyptic number.

It is an amenable number.

7057755557 is a deficient number, since it is larger than the sum of its proper divisors (1).

7057755557 is an equidigital number, since it uses as much as digits as its factorization.

7057755557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7503125, while the sum is 53.

The square root of 7057755557 is about 84010.4490941454. The cubic root of 7057755557 is about 1918.1778463583.

The spelling of 7057755557 in words is "seven billion, fifty-seven million, seven hundred fifty-five thousand, five hundred fifty-seven".