55365603 has 4 divisors (see below), whose sum is σ = 73820808. Its totient is φ = 36910400.

The previous prime is 55365551. The next prime is 55365641. The reversal of 55365603 is 30656355.

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 55365603 - 2⁹ = 55365091 is a prime.

It is a super-3 number, since 3×55365603³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55365503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9227598 + ... + 9227603.

It is an arithmetic number, because the mean of its divisors is an integer number (18455202).

Almost surely, 2^55365603 is an apocalyptic number.

55365603 is a deficient number, since it is larger than the sum of its proper divisors (18455205).

55365603 is a wasteful number, since it uses less digits than its factorization.

55365603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18455204.

The product of its (nonzero) digits is 40500, while the sum is 33.

The square root of 55365603 is about 7440.8066095014. The cubic root of 55365603 is about 381.1360348067.

The spelling of 55365603 in words is "fifty-five million, three hundred sixty-five thousand, six hundred three".