2145322052 has 6 divisors (see below), whose sum is σ = 3754313598. Its totient is φ = 1072661024.

The previous prime is 2145322043. The next prime is 2145322057. The reversal of 2145322052 is 2502235412.

It can be written as a sum of positive squares in only one way, i.e., 1099187716 + 1046134336 = 33154^2 + 32344^2 .

It is not an unprimeable number, because it can be changed into a prime (2145322057) by changing a digit.

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 as a sum of consecutive naturals, namely, 268165253 + ... + 268165260.

It is an arithmetic number, because the mean of its divisors is an integer number (625718933).

Almost surely, 2^2145322052 is an apocalyptic number.

It is an amenable number.

2145322052 is a deficient number, since it is larger than the sum of its proper divisors (1608991546).

2145322052 is a wasteful number, since it uses less digits than its factorization.

2145322052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536330517 (or 536330515 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2145322052 is about 46317.6213983404. The cubic root of 2145322052 is about 1289.7261305918.

Adding to 2145322052 its reverse (2502235412), we get a palindrome (4647557464).

The spelling of 2145322052 in words is "two billion, one hundred forty-five million, three hundred twenty-two thousand, fifty-two".