55055603 has 2 divisors, whose sum is σ = 55055604. Its totient is φ = 55055602.

The previous prime is 55055591. The next prime is 55055617. The reversal of 55055603 is 30655055.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55055603 - 2⁴ = 55055587 is a prime.

It is a super-2 number, since 2×55055603² = 6062238843387218, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (55051603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27527801 + 27527802.

It is an arithmetic number, because the mean of its divisors is an integer number (27527802).

Almost surely, 2^55055603 is an apocalyptic number.

55055603 is a deficient number, since it is larger than the sum of its proper divisors (1).

55055603 is an equidigital number, since it uses as much as digits as its factorization.

55055603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11250, while the sum is 29.

The square root of 55055603 is about 7419.9462936062. The cubic root of 55055603 is about 380.4233578020.

The spelling of 55055603 in words is "fifty-five million, fifty-five thousand, six hundred three".