224715145 has 4 divisors (see below), whose sum is σ = 269658180. Its totient is φ = 179772112.

The previous prime is 224715143. The next prime is 224715157. The reversal of 224715145 is 541517422.

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 76265289 + 148449856 = 8733^2 + 12184^2 .

It is a cyclic number.

It is not a de Polignac number, because 224715145 - 2¹ = 224715143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (224715143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22471510 + ... + 22471519.

It is an arithmetic number, because the mean of its divisors is an integer number (67414545).

Almost surely, 2^224715145 is an apocalyptic number.

It is an amenable number.

224715145 is a deficient number, since it is larger than the sum of its proper divisors (44943035).

224715145 is an equidigital number, since it uses as much as digits as its factorization.

224715145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44943034.

The product of its digits is 11200, while the sum is 31.

The square root of 224715145 is about 14990.5018261565. The cubic root of 224715145 is about 607.9634177335.

The spelling of 224715145 in words is "two hundred twenty-four million, seven hundred fifteen thousand, one hundred forty-five".