223115445 has 64 divisors (see below), whose sum is σ = 456192000. Its totient is φ = 101348928.

The previous prime is 223115419. The next prime is 223115447. The reversal of 223115445 is 544511322.

It is not a de Polignac number, because 223115445 - 2⁹ = 223114933 is a prime.

It is a super-3 number, since 3×223115445³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223115447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 168496 + ... + 169814.

It is an arithmetic number, because the mean of its divisors is an integer number (7128000).

Almost surely, 2^223115445 is an apocalyptic number.

It is an amenable number.

223115445 is an abundant number, since it is smaller than the sum of its proper divisors (233076555).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223115445 is a wasteful number, since it uses less digits than its factorization.

223115445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1513 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 223115445 is about 14937.0494074298. The cubic root of 223115445 is about 606.5173261127.

Adding to 223115445 its reverse (544511322), we get a palindrome (767626767).

The spelling of 223115445 in words is "two hundred twenty-three million, one hundred fifteen thousand, four hundred forty-five".