5205138 has 16 divisors (see below), whose sum is σ = 10432800. Its totient is φ = 1731296.

The previous prime is 5205127. The next prime is 5205139. The reversal of 5205138 is 8315025.

5205138 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5205139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4438 + ... + 5486.

It is an arithmetic number, because the mean of its divisors is an integer number (652050).

Almost surely, 2^5205138 is an apocalyptic number.

5205138 is an abundant number, since it is smaller than the sum of its proper divisors (5227662).

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

5205138 is a wasteful number, since it uses less digits than its factorization.

5205138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 5205138 is about 2281.4771530743. The cubic root of 5205138 is about 173.3048630097.

The spelling of 5205138 in words is "five million, two hundred five thousand, one hundred thirty-eight".