5561904 has 20 divisors (see below), whose sum is σ = 14368376. Its totient is φ = 1853952.

The previous prime is 5561903. The next prime is 5561911. The reversal of 5561904 is 4091655.

It is a super-2 number, since 2×5561904² = 61869552210432, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561903) 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 3 ways as a sum of consecutive naturals, for example, 57889 + ... + 57984.

Almost surely, 2^5561904 is an apocalyptic number.

It is an amenable number.

5561904 is an abundant number, since it is smaller than the sum of its proper divisors (8806472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5561904 is a wasteful number, since it uses less digits than its factorization.

5561904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115884 (or 115878 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 5561904 is about 2358.3689278821. The cubic root of 5561904 is about 177.1771981388.

The spelling of 5561904 in words is "five million, five hundred sixty-one thousand, nine hundred four".