5139815 has 8 divisors (see below), whose sum is σ = 6380640. Its totient is φ = 3969952.

The previous prime is 5139811. The next prime is 5139821. The reversal of 5139815 is 5189315.

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 5139815 - 2² = 5139811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5139811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17579 + ... + 17868.

It is an arithmetic number, because the mean of its divisors is an integer number (797580).

Almost surely, 2^5139815 is an apocalyptic number.

5139815 is a deficient number, since it is larger than the sum of its proper divisors (1240825).

5139815 is a wasteful number, since it uses less digits than its factorization.

5139815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35481.

The product of its digits is 5400, while the sum is 32.

The square root of 5139815 is about 2267.1160093828. The cubic root of 5139815 is about 172.5768333773.

The spelling of 5139815 in words is "five million, one hundred thirty-nine thousand, eight hundred fifteen".