223565261 has 8 divisors (see below), whose sum is σ = 225235584. Its totient is φ = 221901120.

The previous prime is 223565257. The next prime is 223565269. The reversal of 223565261 is 162565322.

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

It is a cyclic number.

It is not a de Polignac number, because 223565261 - 2² = 223565257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223565269) 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, 90140 + ... + 92586.

It is an arithmetic number, because the mean of its divisors is an integer number (28154448).

Almost surely, 2^223565261 is an apocalyptic number.

It is an amenable number.

223565261 is a deficient number, since it is larger than the sum of its proper divisors (1670323).

223565261 is a wasteful number, since it uses less digits than its factorization.

223565261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091.

The product of its digits is 21600, while the sum is 32.

The square root of 223565261 is about 14952.0988827656. The cubic root of 223565261 is about 606.9246459803.

The spelling of 223565261 in words is "two hundred twenty-three million, five hundred sixty-five thousand, two hundred sixty-one".