223513445 has 16 divisors (see below), whose sum is σ = 271401840. Its totient is φ = 176699904.

The previous prime is 223513393. The next prime is 223513453. The reversal of 223513445 is 544315322.

It is a happy number.

223513445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 67338436 + 156175009 = 8206^2 + 12497^2 .

It is a cyclic number.

It is not a de Polignac number, because 223513445 - 2¹⁴ = 223497061 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183659 + ... + 184871.

It is an arithmetic number, because the mean of its divisors is an integer number (16962615).

Almost surely, 2^223513445 is an apocalyptic number.

It is an amenable number.

223513445 is a deficient number, since it is larger than the sum of its proper divisors (47888395).

223513445 is a wasteful number, since it uses less digits than its factorization.

223513445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624.

The product of its digits is 14400, while the sum is 29.

The square root of 223513445 is about 14950.3660490304. The cubic root of 223513445 is about 606.8777531293.

Adding to 223513445 its reverse (544315322), we get a palindrome (767828767).

The spelling of 223513445 in words is "two hundred twenty-three million, five hundred thirteen thousand, four hundred forty-five".