5138531 has 8 divisors (see below), whose sum is σ = 5437200. Its totient is φ = 4842720.

The previous prime is 5138519. The next prime is 5138533. The reversal of 5138531 is 1358315.

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

It is not a de Polignac number, because 5138531 - 2¹⁰ = 5137507 is a prime.

It is a super-2 number, since 2×5138531² = 52809001675922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5138531.

It is not an unprimeable number, because it can be changed into a prime (5138533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3761 + ... + 4941.

It is an arithmetic number, because the mean of its divisors is an integer number (679650).

Almost surely, 2^5138531 is an apocalyptic number.

5138531 is a deficient number, since it is larger than the sum of its proper divisors (298669).

5138531 is a wasteful number, since it uses less digits than its factorization.

5138531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1429.

The product of its digits is 1800, while the sum is 26.

The square root of 5138531 is about 2266.8328125382. The cubic root of 5138531 is about 172.5624614522.

The spelling of 5138531 in words is "five million, one hundred thirty-eight thousand, five hundred thirty-one".