555557 has 2 divisors, whose sum is σ = 555558. Its totient is φ = 555556.

The previous prime is 555523. The next prime is 555589. The reversal of 555557 is 755555.

It is an a-pointer prime, because the next prime (555589) can be obtained adding 555557 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498436 + 57121 = 706^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 555557 - 2⁸ = 555301 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (555257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277778 + 277779.

It is an arithmetic number, because the mean of its divisors is an integer number (277779).

2⁵⁵⁵⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

555557 is a deficient number, since it is larger than the sum of its proper divisors (1).

555557 is an equidigital number, since it uses as much as digits as its factorization.

555557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21875, while the sum is 32.

The square root of 555557 is about 745.3569614621. The cubic root of 555557 is about 82.2071403904.

The spelling of 555557 in words is "five hundred fifty-five thousand, five hundred fifty-seven".