223155461 has 4 divisors (see below), whose sum is σ = 223188492. Its totient is φ = 223122432.

The previous prime is 223155421. The next prime is 223155463. The reversal of 223155461 is 164551322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98386561 + 124768900 = 9919^2 + 11170^2 .

It is a cyclic number.

It is not a de Polignac number, because 223155461 - 2⁶ = 223155397 is a prime.

It is a super-3 number, since 3×223155461³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223155463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306 + ... + 21251.

It is an arithmetic number, because the mean of its divisors is an integer number (55797123).

Almost surely, 2^223155461 is an apocalyptic number.

It is an amenable number.

223155461 is a deficient number, since it is larger than the sum of its proper divisors (33031).

223155461 is an equidigital number, since it uses as much as digits as its factorization.

223155461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33030.

The product of its digits is 7200, while the sum is 29.

The square root of 223155461 is about 14938.3888354802. The cubic root of 223155461 is about 606.5535837946.

The spelling of 223155461 in words is "two hundred twenty-three million, one hundred fifty-five thousand, four hundred sixty-one".