556513 has 2 divisors, whose sum is σ = 556514. Its totient is φ = 556512.

The previous prime is 556487. The next prime is 556519. The reversal of 556513 is 315655.

556513 = 527² + 528².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278784 + 277729 = 528^2 + 527^2 .

It is a cyclic number.

It is not a de Polignac number, because 556513 - 2¹⁷ = 425441 is a prime.

556513 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (556519) 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, 278256 + 278257.

It is an arithmetic number, because the mean of its divisors is an integer number (278257).

2⁵⁵⁶⁵¹³ is an apocalyptic number.

556513 is the 528-th centered square number.

It is an amenable number.

556513 is a deficient number, since it is larger than the sum of its proper divisors (1).

556513 is an equidigital number, since it uses as much as digits as its factorization.

556513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2250, while the sum is 25.

The square root of 556513 is about 745.9979892734. The cubic root of 556513 is about 82.2542672620.

The spelling of 556513 in words is "five hundred fifty-six thousand, five hundred thirteen".