538556 has 6 divisors (see below), whose sum is σ = 942480. Its totient is φ = 269276.

The previous prime is 538553. The next prime is 538561. The reversal of 538556 is 655835.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538553) by changing a digit.

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 as a sum of consecutive naturals, namely, 67316 + ... + 67323.

It is an arithmetic number, because the mean of its divisors is an integer number (157080).

2⁵³⁸⁵⁵⁶ is an apocalyptic number.

It is an amenable number.

538556 is a deficient number, since it is larger than the sum of its proper divisors (403924).

538556 is a wasteful number, since it uses less digits than its factorization.

538556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134643 (or 134641 counting only the distinct ones).

The product of its digits is 18000, while the sum is 32.

The square root of 538556 is about 733.8637475717. The cubic root of 538556 is about 81.3598781641.

The spelling of 538556 in words is "five hundred thirty-eight thousand, five hundred fifty-six".