6515245 has 20 divisors (see below), whose sum is σ = 8696700. Its totient is φ = 4685120.

The previous prime is 6515203. The next prime is 6515261. The reversal of 6515245 is 5425156.

It can be written as a sum of positive squares in 2 ways, for example, as 1771561 + 4743684 = 1331^2 + 2178^2 .

It is not a de Polignac number, because 6515245 - 2¹⁷ = 6384173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 73161 + ... + 73249.

It is an arithmetic number, because the mean of its divisors is an integer number (434835).

Almost surely, 2^6515245 is an apocalyptic number.

It is an amenable number.

6515245 is a deficient number, since it is larger than the sum of its proper divisors (2181455).

6515245 is an frugal number, since it uses more digits than its factorization.

6515245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 105 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 6515245 is about 2552.4977962772. The cubic root of 6515245 is about 186.7713468272.

The spelling of 6515245 in words is "six million, five hundred fifteen thousand, two hundred forty-five".