204029261 has 2 divisors, whose sum is σ = 204029262. Its totient is φ = 204029260.

The previous prime is 204029249. The next prime is 204029269. The reversal of 204029261 is 162920402.

204029261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121110025 + 82919236 = 11005^2 + 9106^2 .

It is a cyclic number.

It is not a de Polignac number, because 204029261 - 2¹⁴ = 204012877 is a prime.

It is a super-2 number, since 2×204029261² = 83255878688412242, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204029261.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204029269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102014630 + 102014631.

It is an arithmetic number, because the mean of its divisors is an integer number (102014631).

Almost surely, 2^204029261 is an apocalyptic number.

It is an amenable number.

204029261 is a deficient number, since it is larger than the sum of its proper divisors (1).

204029261 is an equidigital number, since it uses as much as digits as its factorization.

204029261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 204029261 is about 14283.8811602449. The cubic root of 204029261 is about 588.7046761989.

Adding to 204029261 its reverse (162920402), we get a palindrome (366949663).

The spelling of 204029261 in words is "two hundred four million, twenty-nine thousand, two hundred sixty-one".