223561047 has 4 divisors (see below), whose sum is σ = 298081400. Its totient is φ = 149040696.

The previous prime is 223561031. The next prime is 223561099. The reversal of 223561047 is 740165322.

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

It is not a de Polignac number, because 223561047 - 2⁴ = 223561031 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 (223561027) 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, 37260172 + ... + 37260177.

It is an arithmetic number, because the mean of its divisors is an integer number (74520350).

Almost surely, 2^223561047 is an apocalyptic number.

223561047 is a deficient number, since it is larger than the sum of its proper divisors (74520353).

223561047 is an equidigital number, since it uses as much as digits as its factorization.

223561047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74520352.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 223561047 is about 14951.9579654305. The cubic root of 223561047 is about 606.9208326321.

It can be divided in two parts, 223 and 561047, that added together give a triangular number (561270 = T₁₀₅₉).

The spelling of 223561047 in words is "two hundred twenty-three million, five hundred sixty-one thousand, forty-seven".