2145452215 has 16 divisors (see below), whose sum is σ = 2650330368. Its totient is φ = 1666054656.

The previous prime is 2145452189. The next prime is 2145452291. The reversal of 2145452215 is 5122545412.

It is a cyclic number.

It is not a de Polignac number, because 2145452215 - 2⁷ = 2145452087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66714 + ... + 93496.

It is an arithmetic number, because the mean of its divisors is an integer number (165645648).

Almost surely, 2^2145452215 is an apocalyptic number.

2145452215 is a deficient number, since it is larger than the sum of its proper divisors (504878153).

2145452215 is a wasteful number, since it uses less digits than its factorization.

2145452215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27258.

The product of its digits is 16000, while the sum is 31.

The square root of 2145452215 is about 46319.0264902016. The cubic root of 2145452215 is about 1289.7522138904.

Adding to 2145452215 its reverse (5122545412), we get a palindrome (7267997627).

The spelling of 2145452215 in words is "two billion, one hundred forty-five million, four hundred fifty-two thousand, two hundred fifteen".