203280055 has 8 divisors (see below), whose sum is σ = 266112144. Its totient is φ = 147840000.

The previous prime is 203280023. The next prime is 203280073. The reversal of 203280055 is 550082302.

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

It is not a de Polignac number, because 203280055 - 2⁵ = 203280023 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, 1847946 + ... + 1848055.

It is an arithmetic number, because the mean of its divisors is an integer number (33264018).

Almost surely, 2^203280055 is an apocalyptic number.

203280055 is a deficient number, since it is larger than the sum of its proper divisors (62832089).

203280055 is a wasteful number, since it uses less digits than its factorization.

203280055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696017.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 203280055 is about 14257.6314652890. The cubic root of 203280055 is about 587.9832077130.

The spelling of 203280055 in words is "two hundred three million, two hundred eighty thousand, fifty-five".