6516145 has 16 divisors (see below), whose sum is σ = 8317440. Its totient is φ = 4886784.

The previous prime is 6516121. The next prime is 6516149. The reversal of 6516145 is 5416156.

It is a cyclic number.

It is not a de Polignac number, because 6516145 - 2⁵ = 6516113 is a prime.

It is a super-2 number, since 2×6516145² = 84920291322050, which contains 22 as substring.

6516145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6516149) 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 15 ways as a sum of consecutive naturals, for example, 10432 + ... + 11038.

It is an arithmetic number, because the mean of its divisors is an integer number (519840).

Almost surely, 2^6516145 is an apocalyptic number.

It is an amenable number.

6516145 is a deficient number, since it is larger than the sum of its proper divisors (1801295).

6516145 is a wasteful number, since it uses less digits than its factorization.

6516145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its digits is 3600, while the sum is 28.

The square root of 6516145 is about 2552.6740880888. The cubic root of 6516145 is about 186.7799464768.

The spelling of 6516145 in words is "six million, five hundred sixteen thousand, one hundred forty-five".