223522961 has 4 divisors (see below), whose sum is σ = 224286132. Its totient is φ = 222759792.

The previous prime is 223522933. The next prime is 223523033. The reversal of 223522961 is 169225322.

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 89889361 + 133633600 = 9481^2 + 11560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223522961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223522931) 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, 381146 + ... + 381731.

It is an arithmetic number, because the mean of its divisors is an integer number (56071533).

Almost surely, 2^223522961 is an apocalyptic number.

It is an amenable number.

223522961 is a deficient number, since it is larger than the sum of its proper divisors (763171).

223522961 is an equidigital number, since it uses as much as digits as its factorization.

223522961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763170.

The product of its digits is 12960, while the sum is 32.

The square root of 223522961 is about 14950.6842987202. The cubic root of 223522961 is about 606.8863655370.

The spelling of 223522961 in words is "two hundred twenty-three million, five hundred twenty-two thousand, nine hundred sixty-one".