5561810 has 8 divisors (see below), whose sum is σ = 10011276. Its totient is φ = 2224720.

The previous prime is 5561779. The next prime is 5561819. The reversal of 5561810 is 181655.

It can be written as a sum of positive squares in 2 ways, for example, as 5148361 + 413449 = 2269^2 + 643^2 .

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

It is a super-2 number, since 2×5561810² = 61867460952200, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5561810.

It is not an unprimeable number, because it can be changed into a prime (5561819) 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 3 ways as a sum of consecutive naturals, for example, 278081 + ... + 278100.

Almost surely, 2^5561810 is an apocalyptic number.

5561810 is a deficient number, since it is larger than the sum of its proper divisors (4449466).

5561810 is a wasteful number, since it uses less digits than its factorization.

5561810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556188.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 5561810 is about 2358.3489987701. The cubic root of 5561810 is about 177.1761999944.

The spelling of 5561810 in words is "five million, five hundred sixty-one thousand, eight hundred ten".