55445603 has 2 divisors, whose sum is σ = 55445604. Its totient is φ = 55445602.

The previous prime is 55445587. The next prime is 55445609. The reversal of 55445603 is 30654455.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55445603 - 2⁴ = 55445587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55445603.

It is not a weakly prime, because it can be changed into another prime (55445609) 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 as a sum of consecutive naturals, namely, 27722801 + 27722802.

It is an arithmetic number, because the mean of its divisors is an integer number (27722802).

Almost surely, 2^55445603 is an apocalyptic number.

55445603 is a deficient number, since it is larger than the sum of its proper divisors (1).

55445603 is an equidigital number, since it uses as much as digits as its factorization.

55445603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36000, while the sum is 32.

The square root of 55445603 is about 7446.1804302609. The cubic root of 55445603 is about 381.3195194197.

The spelling of 55445603 in words is "fifty-five million, four hundred forty-five thousand, six hundred three".