2145303522 has 32 divisors (see below), whose sum is σ = 4772822400. Its totient is φ = 714279024.

The previous prime is 2145303521. The next prime is 2145303533. The reversal of 2145303522 is 2253035412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2145303521) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25504 + ... + 70292.

It is an arithmetic number, because the mean of its divisors is an integer number (149150700).

Almost surely, 2^2145303522 is an apocalyptic number.

2145303522 is an abundant number, since it is smaller than the sum of its proper divisors (2627518878).

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

2145303522 is a wasteful number, since it uses less digits than its factorization.

2145303522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45687 (or 45681 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2145303522 is about 46317.4213660476. The cubic root of 2145303522 is about 1289.7224172885.

Adding to 2145303522 its reverse (2253035412), we get a palindrome (4398338934).

The spelling of 2145303522 in words is "two billion, one hundred forty-five million, three hundred three thousand, five hundred twenty-two".