223404261 has 16 divisors (see below), whose sum is σ = 322027200. Its totient is φ = 137282688.

The previous prime is 223404257. The next prime is 223404271. The reversal of 223404261 is 162404322.

It is not a de Polignac number, because 223404261 - 2² = 223404257 is a prime.

It is a super-2 number, since 2×223404261² = 99818927665912242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223404271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50856 + ... + 55073.

It is an arithmetic number, because the mean of its divisors is an integer number (20126700).

Almost surely, 2^223404261 is an apocalyptic number.

It is an amenable number.

223404261 is a deficient number, since it is larger than the sum of its proper divisors (98622939).

223404261 is a wasteful number, since it uses less digits than its factorization.

223404261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105988.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 223404261 is about 14946.7140535972. The cubic root of 223404261 is about 606.7789192048.

Adding to 223404261 its reverse (162404322), we get a palindrome (385808583).

The spelling of 223404261 in words is "two hundred twenty-three million, four hundred four thousand, two hundred sixty-one".