2145523232 has 48 divisors (see below), whose sum is σ = 4305521304. Its totient is φ = 1052160000.

The previous prime is 2145523231. The next prime is 2145523243. The reversal of 2145523232 is 2323255412.

It can be written as a sum of positive squares in 4 ways, for example, as 1727566096 + 417957136 = 41564^2 + 20444^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2145523195 and 2145523204.

It is not an unprimeable number, because it can be changed into a prime (2145523231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 781382 + ... + 784122.

Almost surely, 2^2145523232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2145523232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2152760652).

2145523232 is an abundant number, since it is smaller than the sum of its proper divisors (2159998072).

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

2145523232 is a wasteful number, since it uses less digits than its factorization.

2145523232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213 (or 3205 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 2145523232 is about 46319.7930910750. The cubic root of 2145523232 is about 1289.7664445068.

Adding to 2145523232 its reverse (2323255412), we get a palindrome (4468778644).

The spelling of 2145523232 in words is "two billion, one hundred forty-five million, five hundred twenty-three thousand, two hundred thirty-two".