224445545 has 4 divisors (see below), whose sum is σ = 269334660. Its totient is φ = 179556432.

The previous prime is 224445541. The next prime is 224445547. The reversal of 224445545 is 545544422.

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 49042009 + 175403536 = 7003^2 + 13244^2 .

It is a cyclic number.

It is not a de Polignac number, because 224445545 - 2² = 224445541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (224445541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22444550 + ... + 22444559.

It is an arithmetic number, because the mean of its divisors is an integer number (67333665).

Almost surely, 2^224445545 is an apocalyptic number.

It is an amenable number.

224445545 is a deficient number, since it is larger than the sum of its proper divisors (44889115).

224445545 is an equidigital number, since it uses as much as digits as its factorization.

224445545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44889114.

The product of its digits is 128000, while the sum is 35.

The square root of 224445545 is about 14981.5067666774. The cubic root of 224445545 is about 607.7201875323.

Adding to 224445545 its reverse (545544422), we get a palindrome (769989967).

The spelling of 224445545 in words is "two hundred twenty-four million, four hundred forty-five thousand, five hundred forty-five".