204057001 has 4 divisors (see below), whose sum is σ = 216060372. Its totient is φ = 192053632.

The previous prime is 204056999. The next prime is 204057023. The reversal of 204057001 is 100750402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100750402 = 2 ⋅50375201.

It can be written as a sum of positive squares in 2 ways, for example, as 72931600 + 131125401 = 8540^2 + 11451^2 .

It is a cyclic number.

It is not a de Polignac number, because 204057001 - 2¹ = 204056999 is a prime.

It is a super-2 number, since 2×204057001² = 83278519314228002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204057001.

It is not an unprimeable number, because it can be changed into a prime (204057071) by changing a digit.

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, 6001660 + ... + 6001693.

It is an arithmetic number, because the mean of its divisors is an integer number (54015093).

Almost surely, 2^204057001 is an apocalyptic number.

It is an amenable number.

204057001 is a deficient number, since it is larger than the sum of its proper divisors (12003371).

204057001 is a wasteful number, since it uses less digits than its factorization.

204057001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003370.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 204057001 is about 14284.8521518425. The cubic root of 204057001 is about 588.7313552605.

The spelling of 204057001 in words is "two hundred four million, fifty-seven thousand, one".