55345603 has 4 divisors (see below), whose sum is σ = 55717200. Its totient is φ = 54974008.

The previous prime is 55345597. The next prime is 55345657. The reversal of 55345603 is 30654355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55345603 - 2¹⁷ = 55214531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55345403) 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, 185575 + ... + 185872.

It is an arithmetic number, because the mean of its divisors is an integer number (13929300).

Almost surely, 2^55345603 is an apocalyptic number.

55345603 is a deficient number, since it is larger than the sum of its proper divisors (371597).

55345603 is a wasteful number, since it uses less digits than its factorization.

55345603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371596.

The product of its (nonzero) digits is 27000, while the sum is 31.

The square root of 55345603 is about 7439.4625477920. The cubic root of 55345603 is about 381.0901360397.

Adding to 55345603 its reverse (30654355), we get a palindrome (85999958).

The spelling of 55345603 in words is "fifty-five million, three hundred forty-five thousand, six hundred three".