55608553 has 32 divisors (see below), whose sum is σ = 75785472. Its totient is φ = 39398400.

The previous prime is 55608533. The next prime is 55608557. The reversal of 55608553 is 35580655.

It is a cyclic number.

It is not a de Polignac number, because 55608553 - 2¹⁷ = 55477481 is a prime.

It is a super-2 number, since 2×55608553² = 6184622333507618, which contains 22 as substring.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (55608557) 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 31 ways as a sum of consecutive naturals, for example, 72693 + ... + 73453.

It is an arithmetic number, because the mean of its divisors is an integer number (2368296).

Almost surely, 2^55608553 is an apocalyptic number.

It is an amenable number.

55608553 is a deficient number, since it is larger than the sum of its proper divisors (20176919).

55608553 is a wasteful number, since it uses less digits than its factorization.

55608553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 55608553 is about 7457.1142541871. The cubic root of 55608553 is about 381.6927094815.

The spelling of 55608553 in words is "fifty-five million, six hundred eight thousand, five hundred fifty-three".