5281538 has 16 divisors (see below), whose sum is σ = 8399160. Its totient is φ = 2486400.

The previous prime is 5281511. The next prime is 5281547. The reversal of 5281538 is 8351825.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3736489 + 1545049 = 1933^2 + 1243^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1268 + ... + 3488.

Almost surely, 2^5281538 is an apocalyptic number.

5281538 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

5281538 is a deficient number, since it is larger than the sum of its proper divisors (3117622).

5281538 is a wasteful number, since it uses less digits than its factorization.

5281538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293.

The product of its digits is 9600, while the sum is 32.

The square root of 5281538 is about 2298.1596985414. The cubic root of 5281538 is about 174.1486596718.

It can be divided in two parts, 528153 and 8, that multiplied together give a palindrome (4225224).

The spelling of 5281538 in words is "five million, two hundred eighty-one thousand, five hundred thirty-eight".