555642 has 12 divisors (see below), whose sum is σ = 1203930. Its totient is φ = 185208.

The previous prime is 555637. The next prime is 555661. The reversal of 555642 is 246555.

It can be written as a sum of positive squares in only one way, i.e., 549081 + 6561 = 741^2 + 81^2 .

It is an unprimeable number.

555642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15417 + ... + 15452.

2⁵⁵⁵⁶⁴² is an apocalyptic number.

555642 is an abundant number, since it is smaller than the sum of its proper divisors (648288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

555642 is a wasteful number, since it uses less digits than its factorization.

555642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30877 (or 30874 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 555642 is about 745.4139789406. The cubic root of 555642 is about 82.2113327299.

The spelling of 555642 in words is "five hundred fifty-five thousand, six hundred forty-two".