2015565601 has 8 divisors (see below), whose sum is σ = 2403656064. Its totient is φ = 1652513280.

The previous prime is 2015565589. The next prime is 2015565613. The reversal of 2015565601 is 1065655102.

It is an interprime number because it is at equal distance from previous prime (2015565589) and next prime (2015565613).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2015565601 - 2⁹ = 2015565089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015565641) 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 7 ways as a sum of consecutive naturals, for example, 6259360 + ... + 6259681.

It is an arithmetic number, because the mean of its divisors is an integer number (300457008).

Almost surely, 2^2015565601 is an apocalyptic number.

It is an amenable number.

2015565601 is a deficient number, since it is larger than the sum of its proper divisors (388090463).

2015565601 is a wasteful number, since it uses less digits than its factorization.

2015565601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12519071.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 2015565601 is about 44895.0509633300. The cubic root of 2015565601 is about 1263.1811782154.

The spelling of 2015565601 in words is "two billion, fifteen million, five hundred sixty-five thousand, six hundred one".