224001245 has 16 divisors (see below), whose sum is σ = 296542512. Its totient is φ = 161379840.

The previous prime is 224001221. The next prime is 224001269. The reversal of 224001245 is 542100422.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (224001221) and next prime (224001269).

It can be written as a sum of positive squares in 8 ways, for example, as 69322276 + 154678969 = 8326^2 + 12437^2 .

It is not a de Polignac number, because 224001245 - 2⁸ = 224000989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39362 + ... + 44691.

It is an arithmetic number, because the mean of its divisors is an integer number (18533907).

Almost surely, 2^224001245 is an apocalyptic number.

It is an amenable number.

224001245 is a deficient number, since it is larger than the sum of its proper divisors (72541267).

224001245 is a wasteful number, since it uses less digits than its factorization.

224001245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84112.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 224001245 is about 14966.6711395687. The cubic root of 224001245 is about 607.3189195377.

Adding to 224001245 its reverse (542100422), we get a palindrome (766101667).

The spelling of 224001245 in words is "two hundred twenty-four million, one thousand, two hundred forty-five".