223615045 has 4 divisors (see below), whose sum is σ = 268338060. Its totient is φ = 178892032.

The previous prime is 223615043. The next prime is 223615069. The reversal of 223615045 is 540516322.

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 51926436 + 171688609 = 7206^2 + 13103^2 .

It is a cyclic number.

It is not a de Polignac number, because 223615045 - 2¹ = 223615043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223615043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22361500 + ... + 22361509.

It is an arithmetic number, because the mean of its divisors is an integer number (67084515).

Almost surely, 2^223615045 is an apocalyptic number.

It is an amenable number.

223615045 is a deficient number, since it is larger than the sum of its proper divisors (44723015).

223615045 is an equidigital number, since it uses as much as digits as its factorization.

223615045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44723014.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 223615045 is about 14953.7635730942. The cubic root of 223615045 is about 606.9696930714.

The spelling of 223615045 in words is "two hundred twenty-three million, six hundred fifteen thousand, forty-five".