205454201 has 4 divisors (see below), whose sum is σ = 216267600. Its totient is φ = 194640804.

The previous prime is 205454159. The next prime is 205454219. The reversal of 205454201 is 102454502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205454201 is a prime.

It is a super-2 number, since 2×205454201² = 84422857417096802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205454251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5406671 + ... + 5406708.

It is an arithmetic number, because the mean of its divisors is an integer number (54066900).

Almost surely, 2^205454201 is an apocalyptic number.

It is an amenable number.

205454201 is a deficient number, since it is larger than the sum of its proper divisors (10813399).

205454201 is a wasteful number, since it uses less digits than its factorization.

205454201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10813398.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 205454201 is about 14333.6736742539. The cubic root of 205454201 is about 590.0720021291.

The spelling of 205454201 in words is "two hundred five million, four hundred fifty-four thousand, two hundred one".