539121 has 24 divisors (see below), whose sum is σ = 857952. Its totient is φ = 297600.

The previous prime is 539113. The next prime is 539129. The reversal of 539121 is 121935.

539121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (539113) and next prime (539129).

It is not a de Polignac number, because 539121 - 2³ = 539113 is a prime.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17376 + ... + 17406.

It is an arithmetic number, because the mean of its divisors is an integer number (35748).

2⁵³⁹¹²¹ is an apocalyptic number.

539121 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

539121 is a deficient number, since it is larger than the sum of its proper divisors (318831).

539121 is a wasteful number, since it uses less digits than its factorization.

539121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 62 counting only the distinct ones).

The product of its digits is 270, while the sum is 21.

The square root of 539121 is about 734.2485955043. The cubic root of 539121 is about 81.3883198151.

The spelling of 539121 in words is "five hundred thirty-nine thousand, one hundred twenty-one".