2145252204 has 36 divisors (see below), whose sum is σ = 5597650240. Its totient is φ = 692016480.

The previous prime is 2145252167. The next prime is 2145252281. The reversal of 2145252204 is 4022525412.

2145252204 is a `hidden beast` number, since 2 + 1 + 452 + 5 + 2 + 204 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 960019 + ... + 962250.

Almost surely, 2^2145252204 is an apocalyptic number.

It is an amenable number.

2145252204 is an abundant number, since it is smaller than the sum of its proper divisors (3452398036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145252204 is a wasteful number, since it uses less digits than its factorization.

2145252204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922310 (or 1922305 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2145252204 is about 46316.8673811172. The cubic root of 2145252204 is about 1289.7121333509.

Adding to 2145252204 its reverse (4022525412), we get a palindrome (6167777616).

The spelling of 2145252204 in words is "two billion, one hundred forty-five million, two hundred fifty-two thousand, two hundred four".