205500007 has 2 divisors, whose sum is σ = 205500008. Its totient is φ = 205500006.

The previous prime is 205499971. The next prime is 205500017. The reversal of 205500007 is 700005502.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205500007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205500017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102750003 + 102750004.

It is an arithmetic number, because the mean of its divisors is an integer number (102750004).

Almost surely, 2^205500007 is an apocalyptic number.

205500007 is a deficient number, since it is larger than the sum of its proper divisors (1).

205500007 is an equidigital number, since it uses as much as digits as its factorization.

205500007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 350, while the sum is 19.

The square root of 205500007 is about 14335.2714309845. The cubic root of 205500007 is about 590.1158510413.

Adding to 205500007 its reverse (700005502), we get a palindrome (905505509).

The spelling of 205500007 in words is "two hundred five million, five hundred thousand, seven".