5138281 has 8 divisors (see below), whose sum is σ = 5370624. Its totient is φ = 4910160.

The previous prime is 5138279. The next prime is 5138291. The reversal of 5138281 is 1828315.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5138281 - 2¹ = 5138279 is a prime.

It is a super-2 number, since 2×5138281² = 52803863269922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5138291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1575 + ... + 3571.

It is an arithmetic number, because the mean of its divisors is an integer number (671328).

Almost surely, 2^5138281 is an apocalyptic number.

It is an amenable number.

5138281 is a deficient number, since it is larger than the sum of its proper divisors (232343).

5138281 is a wasteful number, since it uses less digits than its factorization.

5138281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2111.

The product of its digits is 1920, while the sum is 28.

The square root of 5138281 is about 2266.7776688507. Note that the first 3 decimals coincide. The cubic root of 5138281 is about 172.5596629018.

The spelling of 5138281 in words is "five million, one hundred thirty-eight thousand, two hundred eighty-one".