556138 has 16 divisors (see below), whose sum is σ = 964224. Its totient is φ = 237760.

The previous prime is 556123. The next prime is 556159. The reversal of 556138 is 831655.

556138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

556138 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370 + ... + 1117.

It is an arithmetic number, because the mean of its divisors is an integer number (60264).

2⁵⁵⁶¹³⁸ is an apocalyptic number.

556138 is a deficient number, since it is larger than the sum of its proper divisors (408086).

556138 is a wasteful number, since it uses less digits than its factorization.

556138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517.

The product of its digits is 3600, while the sum is 28.

The square root of 556138 is about 745.7466057583. The cubic root of 556138 is about 82.2357877409.

The spelling of 556138 in words is "five hundred fifty-six thousand, one hundred thirty-eight".