556407 has 12 divisors (see below), whose sum is σ = 810264. Its totient is φ = 367920.

The previous prime is 556403. The next prime is 556441. The reversal of 556407 is 704655.

It is not a de Polignac number, because 556407 - 2² = 556403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556403) 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 11 ways as a sum of consecutive naturals, for example, 1753 + ... + 2045.

It is an arithmetic number, because the mean of its divisors is an integer number (67522).

2⁵⁵⁶⁴⁰⁷ is an apocalyptic number.

556407 is a deficient number, since it is larger than the sum of its proper divisors (253857).

556407 is a wasteful number, since it uses less digits than its factorization.

556407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 556407 is about 745.9269401222. The cubic root of 556407 is about 82.2490445592.

The spelling of 556407 in words is "five hundred fifty-six thousand, four hundred seven".