556013 has 4 divisors (see below), whose sum is σ = 557760. Its totient is φ = 554268.

The previous prime is 556007. The next prime is 556021. The reversal of 556013 is 310655.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310655 = 5 ⋅62131.

It is a cyclic number.

It is not a de Polignac number, because 556013 - 2¹² = 551917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245 + ... + 1082.

It is an arithmetic number, because the mean of its divisors is an integer number (139440).

2⁵⁵⁶⁰¹³ is an apocalyptic number.

It is an amenable number.

556013 is a deficient number, since it is larger than the sum of its proper divisors (1747).

556013 is a wasteful number, since it uses less digits than its factorization.

556013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 556013 is about 745.6627924203. The cubic root of 556013 is about 82.2296260546.

Adding to 556013 its reverse (310655), we get a palindrome (866668).

The spelling of 556013 in words is "five hundred fifty-six thousand, thirteen".