2015540545 has 16 divisors (see below), whose sum is σ = 2454883200. Its totient is φ = 1588316800.

The previous prime is 2015540533. The next prime is 2015540567. The reversal of 2015540545 is 5450455102.

It is not a de Polignac number, because 2015540545 - 2¹⁹ = 2015016257 is a prime.

It is an unprimeable number.

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, 609306 + ... + 612604.

It is an arithmetic number, because the mean of its divisors is an integer number (153430200).

Almost surely, 2^2015540545 is an apocalyptic number.

It is an amenable number.

2015540545 is a deficient number, since it is larger than the sum of its proper divisors (439342655).

2015540545 is a wasteful number, since it uses less digits than its factorization.

2015540545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5096.

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 2015540545 is about 44894.7719116603. The cubic root of 2015540545 is about 1263.1759438867.

Adding to 2015540545 its reverse (5450455102), we get a palindrome (7465995647).

The spelling of 2015540545 in words is "two billion, fifteen million, five hundred forty thousand, five hundred forty-five".