5139321 has 16 divisors (see below), whose sum is σ = 7915968. Its totient is φ = 2931200.

The previous prime is 5139319. The next prime is 5139341. The reversal of 5139321 is 1239315.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5139321 - 2¹ = 5139319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5139291 and 5139300.

It is not an unprimeable number, because it can be changed into a prime (5139301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4020 + ... + 5141.

It is an arithmetic number, because the mean of its divisors is an integer number (494748).

Almost surely, 2^5139321 is an apocalyptic number.

5139321 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5139321 is a deficient number, since it is larger than the sum of its proper divisors (2776647).

5139321 is a wasteful number, since it uses less digits than its factorization.

5139321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9192.

The product of its digits is 810, while the sum is 24.

The square root of 5139321 is about 2267.0070577746. The cubic root of 5139321 is about 172.5713042752.

It can be divided in two parts, 5139 and 321, that added together give a triangular number (5460 = T₁₀₄).

The spelling of 5139321 in words is "five million, one hundred thirty-nine thousand, three hundred twenty-one".