203055001 has 8 divisors (see below), whose sum is σ = 213630984. Its totient is φ = 192746880.

The previous prime is 203054983. The next prime is 203055007. The reversal of 203055001 is 100550302.

It can be written as a sum of positive squares in 4 ways, for example, as 62015625 + 141039376 = 7875^2 + 11876^2 .

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 203055001 - 2¹¹ = 203052953 is a prime.

It is a super-2 number, since 2×203055001² = 82462666862220002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203055007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65410 + ... + 68443.

It is an arithmetic number, because the mean of its divisors is an integer number (26703873).

Almost surely, 2^203055001 is an apocalyptic number.

It is an amenable number.

203055001 is a deficient number, since it is larger than the sum of its proper divisors (10575983).

203055001 is a wasteful number, since it uses less digits than its factorization.

203055001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133931.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 203055001 is about 14249.7368747637. The cubic root of 203055001 is about 587.7661396278.

The spelling of 203055001 in words is "two hundred three million, fifty-five thousand, one".