205961201 has 2 divisors, whose sum is σ = 205961202. Its totient is φ = 205961200.

The previous prime is 205961177. The next prime is 205961227. The reversal of 205961201 is 102169502.

It is an a-pointer prime, because the next prime (205961227) can be obtained adding 205961201 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205951201 + 10000 = 14351^2 + 100^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205961201 is a prime.

It is not a weakly prime, because it can be changed into another prime (205961291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102980600 + 102980601.

It is an arithmetic number, because the mean of its divisors is an integer number (102980601).

Almost surely, 2^205961201 is an apocalyptic number.

It is an amenable number.

205961201 is a deficient number, since it is larger than the sum of its proper divisors (1).

205961201 is an equidigital number, since it uses as much as digits as its factorization.

205961201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 205961201 is about 14351.3484035473. The cubic root of 205961201 is about 590.5569776220.

The spelling of 205961201 in words is "two hundred five million, nine hundred sixty-one thousand, two hundred one".