557845109 has 2 divisors, whose sum is σ = 557845110. Its totient is φ = 557845108.

The previous prime is 557845103. The next prime is 557845129. The reversal of 557845109 is 901548755.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 497736100 + 60109009 = 22310^2 + 7753^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-557845109 is a prime.

It is a super-3 number, since 3×557845109³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 557845109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557845103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278922554 + 278922555.

It is an arithmetic number, because the mean of its divisors is an integer number (278922555).

Almost surely, 2^557845109 is an apocalyptic number.

It is an amenable number.

557845109 is a deficient number, since it is larger than the sum of its proper divisors (1).

557845109 is an equidigital number, since it uses as much as digits as its factorization.

557845109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 557845109 is about 23618.7448650431. The cubic root of 557845109 is about 823.1984484933.

The spelling of 557845109 in words is "five hundred fifty-seven million, eight hundred forty-five thousand, one hundred nine".