6515054545 has 4 divisors (see below), whose sum is σ = 7818065460. Its totient is φ = 5212043632.

The previous prime is 6515054477. The next prime is 6515054549. The reversal of 6515054545 is 5454505156.

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 4706508816 + 1808545729 = 68604^2 + 42527^2 .

It is a cyclic number.

It is not a de Polignac number, because 6515054545 - 2¹¹ = 6515052497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6515054498 and 6515054507.

It is not an unprimeable number, because it can be changed into a prime (6515054549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651505450 + ... + 651505459.

It is an arithmetic number, because the mean of its divisors is an integer number (1954516365).

Almost surely, 2^6515054545 is an apocalyptic number.

It is an amenable number.

6515054545 is a deficient number, since it is larger than the sum of its proper divisors (1303010915).

6515054545 is a wasteful number, since it uses less digits than its factorization.

6515054545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303010914.

The product of its (nonzero) digits is 300000, while the sum is 40.

The square root of 6515054545 is about 80715.8878102694. The cubic root of 6515054545 is about 1867.6952689647.

The spelling of 6515054545 in words is "six billion, five hundred fifteen million, fifty-four thousand, five hundred forty-five".