556247 has 4 divisors (see below), whose sum is σ = 569856. Its totient is φ = 542640.

The previous prime is 556243. The next prime is 556253. The reversal of 556247 is 742655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742655 = 5 ⋅148531.

It is a cyclic number.

It is not a de Polignac number, because 556247 - 2² = 556243 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 (556243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6743 + ... + 6824.

It is an arithmetic number, because the mean of its divisors is an integer number (142464).

2⁵⁵⁶²⁴⁷ is an apocalyptic number.

556247 is a deficient number, since it is larger than the sum of its proper divisors (13609).

556247 is a wasteful number, since it uses less digits than its factorization.

556247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13608.

The product of its digits is 8400, while the sum is 29.

The square root of 556247 is about 745.8196833015. The cubic root of 556247 is about 82.2411599779.

The spelling of 556247 in words is "five hundred fifty-six thousand, two hundred forty-seven".