205247093 has 2 divisors, whose sum is σ = 205247094. Its totient is φ = 205247092.

The previous prime is 205247089. The next prime is 205247117. The reversal of 205247093 is 390742502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122036209 + 83210884 = 11047^2 + 9122^2 .

It is a cyclic number.

It is not a de Polignac number, because 205247093 - 2² = 205247089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205247593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102623546 + 102623547.

It is an arithmetic number, because the mean of its divisors is an integer number (102623547).

Almost surely, 2^205247093 is an apocalyptic number.

It is an amenable number.

205247093 is a deficient number, since it is larger than the sum of its proper divisors (1).

205247093 is an equidigital number, since it uses as much as digits as its factorization.

205247093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 205247093 is about 14326.4473265356. The cubic root of 205247093 is about 589.8736615439.

Adding to 205247093 its reverse (390742502), we get a palindrome (595989595).

The spelling of 205247093 in words is "two hundred five million, two hundred forty-seven thousand, ninety-three".