203097955 has 4 divisors (see below), whose sum is σ = 243717552. Its totient is φ = 162478360.

The previous prime is 203097941. The next prime is 203097977. The reversal of 203097955 is 559790302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 203097955 - 2⁹ = 203097443 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20309791 + ... + 20309800.

It is an arithmetic number, because the mean of its divisors is an integer number (60929388).

Almost surely, 2^203097955 is an apocalyptic number.

203097955 is a deficient number, since it is larger than the sum of its proper divisors (40619597).

203097955 is an equidigital number, since it uses as much as digits as its factorization.

203097955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40619596.

The product of its (nonzero) digits is 85050, while the sum is 40.

The square root of 203097955 is about 14251.2439807899. The cubic root of 203097955 is about 587.8075818095.

The spelling of 203097955 in words is "two hundred three million, ninety-seven thousand, nine hundred fifty-five".