205224261 has 8 divisors (see below), whose sum is σ = 298508064. Its totient is φ = 124378320.

The previous prime is 205224259. The next prime is 205224269. The reversal of 205224261 is 162422502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205224261 - 2¹ = 205224259 is a prime.

It is a super-2 number, since 2×205224261² = 84233994605992242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205224269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3109426 + ... + 3109491.

It is an arithmetic number, because the mean of its divisors is an integer number (37313508).

Almost surely, 2^205224261 is an apocalyptic number.

It is an amenable number.

205224261 is a deficient number, since it is larger than the sum of its proper divisors (93283803).

205224261 is a wasteful number, since it uses less digits than its factorization.

205224261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6218931.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 205224261 is about 14325.6504564365. The cubic root of 205224261 is about 589.8517879172.

Adding to 205224261 its reverse (162422502), we get a palindrome (367646763).

The spelling of 205224261 in words is "two hundred five million, two hundred twenty-four thousand, two hundred sixty-one".