5565561515 has 4 divisors (see below), whose sum is σ = 6678673824. Its totient is φ = 4452449208.

The previous prime is 5565561499. The next prime is 5565561539. The reversal of 5565561515 is 5151655655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5151655655 = 5 ⋅1030331131.

It is a cyclic number.

It is not a de Polignac number, because 5565561515 - 2⁴ = 5565561499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 556556147 + ... + 556556156.

It is an arithmetic number, because the mean of its divisors is an integer number (1669668456).

Almost surely, 2^5565561515 is an apocalyptic number.

5565561515 is a deficient number, since it is larger than the sum of its proper divisors (1113112309).

5565561515 is a wasteful number, since it uses less digits than its factorization.

5565561515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113112308.

The product of its digits is 562500, while the sum is 44.

The square root of 5565561515 is about 74602.6910707650. The cubic root of 5565561515 is about 1772.1602694417.

The spelling of 5565561515 in words is "five billion, five hundred sixty-five million, five hundred sixty-one thousand, five hundred fifteen".