5139081 has 12 divisors (see below), whose sum is σ = 7472452. Its totient is φ = 3403296.

The previous prime is 5139073. The next prime is 5139089. The reversal of 5139081 is 1809315.

It is an interprime number because it is at equal distance from previous prime (5139073) and next prime (5139089).

It can be written as a sum of positive squares in 2 ways, for example, as 665856 + 4473225 = 816^2 + 2115^2 .

It is not a de Polignac number, because 5139081 - 2³ = 5139073 is a prime.

It is a super-2 number, since 2×5139081² = 52820307049122, which contains 22 as substring.

It is a Duffinian number.

5139081 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5139089) 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 11 ways as a sum of consecutive naturals, for example, 406 + ... + 3231.

Almost surely, 2^5139081 is an apocalyptic number.

It is an amenable number.

5139081 is a deficient number, since it is larger than the sum of its proper divisors (2333371).

5139081 is a wasteful number, since it uses less digits than its factorization.

5139081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800 (or 3797 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 5139081 is about 2266.9541239293. The cubic root of 5139081 is about 172.5686179438.

The spelling of 5139081 in words is "five million, one hundred thirty-nine thousand, eighty-one".