223245451 has 48 divisors (see below), whose sum is σ = 282229920. Its totient is φ = 174720000.

The previous prime is 223245437. The next prime is 223245467. The reversal of 223245451 is 154542322.

It is a de Polignac number, because none of the positive numbers 2^k-223245451 is a prime.

It is a super-3 number, since 3×223245451³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223245401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2210301 + ... + 2210401.

It is an arithmetic number, because the mean of its divisors is an integer number (5879790).

Almost surely, 2^223245451 is an apocalyptic number.

223245451 is a deficient number, since it is larger than the sum of its proper divisors (58984469).

223245451 is a wasteful number, since it uses less digits than its factorization.

223245451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 195 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 223245451 is about 14941.4005702277. The cubic root of 223245451 is about 606.6351060679.

Adding to 223245451 its reverse (154542322), we get a palindrome (377787773).

The spelling of 223245451 in words is "two hundred twenty-three million, two hundred forty-five thousand, four hundred fifty-one".