203155055 has 8 divisors (see below), whose sum is σ = 247425072. Its totient is φ = 160098048.

The previous prime is 203155039. The next prime is 203155157. The reversal of 203155055 is 550551302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203155055 - 2⁴ = 203155039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302882 + ... + 303551.

It is an arithmetic number, because the mean of its divisors is an integer number (30928134).

Almost surely, 2^203155055 is an apocalyptic number.

203155055 is a deficient number, since it is larger than the sum of its proper divisors (44270017).

203155055 is an equidigital number, since it uses as much as digits as its factorization.

203155055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606505.

The product of its (nonzero) digits is 3750, while the sum is 26.

The square root of 203155055 is about 14253.2471738899. The cubic root of 203155055 is about 587.8626630600.

The spelling of 203155055 in words is "two hundred three million, one hundred fifty-five thousand, fifty-five".