223145252 has 12 divisors (see below), whose sum is σ = 426004656. Its totient is φ = 101429640.

The previous prime is 223145201. The next prime is 223145297. The reversal of 223145252 is 252541322.

223145252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223145252³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2535698 + ... + 2535785.

It is an arithmetic number, because the mean of its divisors is an integer number (35500388).

Almost surely, 2^223145252 is an apocalyptic number.

223145252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

223145252 is a deficient number, since it is larger than the sum of its proper divisors (202859404).

223145252 is a wasteful number, since it uses less digits than its factorization.

223145252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5071498 (or 5071496 counting only the distinct ones).

The product of its digits is 4800, while the sum is 26.

The square root of 223145252 is about 14938.0471280553. The cubic root of 223145252 is about 606.5443340396.

Adding to 223145252 its reverse (252541322), we get a palindrome (475686574).

The spelling of 223145252 in words is "two hundred twenty-three million, one hundred forty-five thousand, two hundred fifty-two".