2145532245 has 8 divisors (see below), whose sum is σ = 3432851616. Its totient is φ = 1144283856.

The previous prime is 2145532229. The next prime is 2145532247. The reversal of 2145532245 is 5422355412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2145532245 - 2⁴ = 2145532229 is a prime.

It is a super-2 number, since 2×2145532245² = 9206617228669480050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145532247) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 71517727 + ... + 71517756.

It is an arithmetic number, because the mean of its divisors is an integer number (429106452).

Almost surely, 2^2145532245 is an apocalyptic number.

It is an amenable number.

2145532245 is a deficient number, since it is larger than the sum of its proper divisors (1287319371).

2145532245 is a wasteful number, since it uses less digits than its factorization.

2145532245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143035491.

The product of its digits is 48000, while the sum is 33.

The square root of 2145532245 is about 46319.8903819946. The cubic root of 2145532245 is about 1289.7682505385.

Adding to 2145532245 its reverse (5422355412), we get a palindrome (7567887657).

The spelling of 2145532245 in words is "two billion, one hundred forty-five million, five hundred thirty-two thousand, two hundred forty-five".