556907 has 4 divisors (see below), whose sum is σ = 599760. Its totient is φ = 514056.

The previous prime is 556891. The next prime is 556931. The reversal of 556907 is 709655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 709655 = 5 ⋅141931.

It is a cyclic number.

It is not a de Polignac number, because 556907 - 2⁴ = 556891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556957) 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, 21407 + ... + 21432.

It is an arithmetic number, because the mean of its divisors is an integer number (149940).

2⁵⁵⁶⁹⁰⁷ is an apocalyptic number.

556907 is a deficient number, since it is larger than the sum of its proper divisors (42853).

556907 is a wasteful number, since it uses less digits than its factorization.

556907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42852.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 556907 is about 746.2620183287. The cubic root of 556907 is about 82.2736741379.

The spelling of 556907 in words is "five hundred fifty-six thousand, nine hundred seven".