5561615 has 4 divisors (see below), whose sum is σ = 6673944. Its totient is φ = 4449288.

The previous prime is 5561599. The next prime is 5561627. The reversal of 5561615 is 5161655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5561615 - 2⁴ = 5561599 is a prime.

It is a super-2 number, since 2×5561615² = 61863122816450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 556157 + ... + 556166.

It is an arithmetic number, because the mean of its divisors is an integer number (1668486).

Almost surely, 2^5561615 is an apocalyptic number.

5561615 is a deficient number, since it is larger than the sum of its proper divisors (1112329).

5561615 is a wasteful number, since it uses less digits than its factorization.

5561615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112328.

The product of its digits is 4500, while the sum is 29.

The square root of 5561615 is about 2358.3076559262. The cubic root of 5561615 is about 177.1741293397.

The spelling of 5561615 in words is "five million, five hundred sixty-one thousand, six hundred fifteen".