6516045 has 48 divisors (see below), whose sum is σ = 12160512. Its totient is φ = 3343680.

The previous prime is 6516043. The next prime is 6516047. The reversal of 6516045 is 5406156.

It is a happy number.

6516045 is a `hidden beast` number, since 6 + 51 + 604 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (6516043) and next prime (6516047).

It is not a de Polignac number, because 6516045 - 2¹ = 6516043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37579 + ... + 37751.

It is an arithmetic number, because the mean of its divisors is an integer number (253344).

Almost surely, 2^6516045 is an apocalyptic number.

It is an amenable number.

6516045 is a deficient number, since it is larger than the sum of its proper divisors (5644467).

6516045 is a wasteful number, since it uses less digits than its factorization.

6516045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 6516045 is about 2552.6545007110. The cubic root of 6516045 is about 186.7789909993.

It can be divided in two parts, 65 and 16045, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 6516045 in words is "six million, five hundred sixteen thousand, forty-five".