5553561 has 16 divisors (see below), whose sum is σ = 8033984. Its totient is φ = 3392064.

The previous prime is 5553547. The next prime is 5553571. The reversal of 5553561 is 1653555.

It is not a de Polignac number, because 5553561 - 2⁶ = 5553497 is a prime.

It is a Duffinian number.

5553561 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (5553521) 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 15 ways as a sum of consecutive naturals, for example, 5670 + ... + 6576.

It is an arithmetic number, because the mean of its divisors is an integer number (502124).

Almost surely, 2^5553561 is an apocalyptic number.

It is an amenable number.

5553561 is a deficient number, since it is larger than the sum of its proper divisors (2480423).

5553561 is a wasteful number, since it uses less digits than its factorization.

5553561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its digits is 11250, while the sum is 30.

The square root of 5553561 is about 2356.5994568445. The cubic root of 5553561 is about 177.0885636779.

The spelling of 5553561 in words is "five million, five hundred fifty-three thousand, five hundred sixty-one".