6516049 has 4 divisors (see below), whose sum is σ = 6899364. Its totient is φ = 6132736.

The previous prime is 6516047. The next prime is 6516073. The reversal of 6516049 is 9406156.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4129024 + 2387025 = 2032^2 + 1545^2 .

It is a cyclic number.

It is not a de Polignac number, because 6516049 - 2¹ = 6516047 is a prime.

It is a Duffinian number.

6516049 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 6516049.

It is not an unprimeable number, because it can be changed into a prime (6516043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191632 + ... + 191665.

It is an arithmetic number, because the mean of its divisors is an integer number (1724841).

Almost surely, 2^6516049 is an apocalyptic number.

It is an amenable number.

6516049 is a deficient number, since it is larger than the sum of its proper divisors (383315).

6516049 is a wasteful number, since it uses less digits than its factorization.

6516049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383314.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 6516049 is about 2552.6552842090. The cubic root of 6516049 is about 186.7790292186.

The spelling of 6516049 in words is "six million, five hundred sixteen thousand, forty-nine".