606161557 has 2 divisors, whose sum is σ = 606161558. Its totient is φ = 606161556.

The previous prime is 606161539. The next prime is 606161581. The reversal of 606161557 is 755161606.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 319908996 + 286252561 = 17886^2 + 16919^2 .

It is a cyclic number.

It is not a de Polignac number, because 606161557 - 2²³ = 597772949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (606161587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303080778 + 303080779.

It is an arithmetic number, because the mean of its divisors is an integer number (303080779).

Almost surely, 2^606161557 is an apocalyptic number.

It is an amenable number.

606161557 is a deficient number, since it is larger than the sum of its proper divisors (1).

606161557 is an equidigital number, since it uses as much as digits as its factorization.

606161557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 606161557 is about 24620.3484337651. The cubic root of 606161557 is about 846.3099819374.

The spelling of 606161557 in words is "six hundred six million, one hundred sixty-one thousand, five hundred fifty-seven".