2015320445 has 16 divisors (see below), whose sum is σ = 2457692928. Its totient is φ = 1586148480.

The previous prime is 2015320397. The next prime is 2015320457. The reversal of 2015320445 is 5440235102.

It is a happy number.

It is not a de Polignac number, because 2015320445 - 2⁶ = 2015320381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 167057 + ... + 178713.

It is an arithmetic number, because the mean of its divisors is an integer number (153605808).

Almost surely, 2^2015320445 is an apocalyptic number.

It is an amenable number.

2015320445 is a deficient number, since it is larger than the sum of its proper divisors (442372483).

2015320445 is a wasteful number, since it uses less digits than its factorization.

2015320445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12220.

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

The square root of 2015320445 is about 44892.3205570841. The cubic root of 2015320445 is about 1263.1299619875.

Adding to 2015320445 its reverse (5440235102), we get a palindrome (7455555547).

The spelling of 2015320445 in words is "two billion, fifteen million, three hundred twenty thousand, four hundred forty-five".