5561691 has 16 divisors (see below), whose sum is σ = 7687680. Its totient is φ = 3574080.

The previous prime is 5561687. The next prime is 5561693. The reversal of 5561691 is 1961655.

It is not a de Polignac number, because 5561691 - 2² = 5561687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5561693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12450 + ... + 12888.

It is an arithmetic number, because the mean of its divisors is an integer number (480480).

Almost surely, 2^5561691 is an apocalyptic number.

5561691 is a deficient number, since it is larger than the sum of its proper divisors (2125989).

5561691 is a wasteful number, since it uses less digits than its factorization.

5561691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

The product of its digits is 8100, while the sum is 33.

The square root of 5561691 is about 2358.3237691208. The cubic root of 5561691 is about 177.1749363699.

The spelling of 5561691 in words is "five million, five hundred sixty-one thousand, six hundred ninety-one".