5561890 has 16 divisors (see below), whose sum is σ = 10600632. Its totient is φ = 2093824.

The previous prime is 5561879. The next prime is 5561891. The reversal of 5561890 is 981655.

It can be written as a sum of positive squares in 4 ways, for example, as 5536609 + 25281 = 2353^2 + 159^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (5561891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16189 + ... + 16528.

Almost surely, 2^5561890 is an apocalyptic number.

5561890 is a deficient number, since it is larger than the sum of its proper divisors (5038742).

5561890 is a wasteful number, since it uses less digits than its factorization.

5561890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32741.

The product of its (nonzero) digits is 10800, while the sum is 34.

The square root of 5561890 is about 2358.3659597272. The cubic root of 5561890 is about 177.1770494797.

The spelling of 5561890 in words is "five million, five hundred sixty-one thousand, eight hundred ninety".