5231538 has 48 divisors (see below), whose sum is σ = 12405120. Its totient is φ = 1583712.

The previous prime is 5231537. The next prime is 5231579. The reversal of 5231538 is 8351325.

It is not an unprimeable number, because it can be changed into a prime (5231531) 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, 18345 + ... + 18627.

It is an arithmetic number, because the mean of its divisors is an integer number (258440).

Almost surely, 2^5231538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5231538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6202560).

5231538 is an abundant number, since it is smaller than the sum of its proper divisors (7173582).

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

5231538 is a wasteful number, since it uses less digits than its factorization.

5231538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 380 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 5231538 is about 2287.2555607103. The cubic root of 5231538 is about 173.5973647019.

The spelling of 5231538 in words is "five million, two hundred thirty-one thousand, five hundred thirty-eight".