205054001 has 8 divisors (see below), whose sum is σ = 208707624. Its totient is φ = 201409920.

The previous prime is 205053967. The next prime is 205054013. The reversal of 205054001 is 100450502.

It can be written as a sum of positive squares in 4 ways, for example, as 3385600 + 201668401 = 1840^2 + 14201^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205054001 is a prime.

It is a super-2 number, since 2×205054001² = 84094286652216002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205054021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51581 + ... + 55413.

It is an arithmetic number, because the mean of its divisors is an integer number (26088453).

Almost surely, 2^205054001 is an apocalyptic number.

It is an amenable number.

205054001 is a deficient number, since it is larger than the sum of its proper divisors (3653623).

205054001 is an equidigital number, since it uses as much as digits as its factorization.

205054001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4771.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 205054001 is about 14319.7067358239. The cubic root of 205054001 is about 589.6886234024.

The spelling of 205054001 in words is "two hundred five million, fifty-four thousand, one".