2145513224 has 24 divisors (see below), whose sum is σ = 4156807230. Its totient is φ = 1038147840.

The previous prime is 2145513217. The next prime is 2145513281. The reversal of 2145513224 is 4223155412.

It can be written as a sum of positive squares in only one way, i.e., 1141764100 + 1003749124 = 33790^2 + 31682^2 .

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 5 ways as a sum of consecutive naturals, for example, 131849 + ... + 147224.

Almost surely, 2^2145513224 is an apocalyptic number.

It is an amenable number.

2145513224 is a deficient number, since it is larger than the sum of its proper divisors (2011294006).

2145513224 is a wasteful number, since it uses less digits than its factorization.

2145513224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279141 (or 279106 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 2145513224 is about 46319.6850593784. The cubic root of 2145513224 is about 1289.7644390904.

Adding to 2145513224 its reverse (4223155412), we get a palindrome (6368668636).

The spelling of 2145513224 in words is "two billion, one hundred forty-five million, five hundred thirteen thousand, two hundred twenty-four".