6515145 has 96 divisors (see below), whose sum is σ = 14606592. Its totient is φ = 2612736.

The previous prime is 6515129. The next prime is 6515153. The reversal of 6515145 is 5415156.

It is a happy number.

6515145 is a `hidden beast` number, since 6 + 515 + 145 = 666.

6515145 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 6515145 - 2⁴ = 6515129 is a prime.

It is a super-2 number, since 2×6515145² = 84894228742050, which contains 22 as substring.

It is a Curzon number.

6515145 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 151494 + ... + 151536.

It is an arithmetic number, because the mean of its divisors is an integer number (152152).

Almost surely, 2^6515145 is an apocalyptic number.

6515145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6515145 is an abundant number, since it is smaller than the sum of its proper divisors (8091447).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6515145 is a wasteful number, since it uses less digits than its factorization.

6515145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111 (or 108 counting only the distinct ones).

The product of its digits is 3000, while the sum is 27.

The square root of 6515145 is about 2552.4782075465. The cubic root of 6515145 is about 186.7703912617.

The spelling of 6515145 in words is "six million, five hundred fifteen thousand, one hundred forty-five".