2145504115 has 16 divisors (see below), whose sum is σ = 2604603456. Its totient is φ = 1696464000.

The previous prime is 2145504061. The next prime is 2145504121. The reversal of 2145504115 is 5114055412.

It is not a de Polignac number, because 2145504115 - 2¹⁵ = 2145471347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315289 + ... + 322021.

It is an arithmetic number, because the mean of its divisors is an integer number (162787716).

Almost surely, 2^2145504115 is an apocalyptic number.

2145504115 is a deficient number, since it is larger than the sum of its proper divisors (459099341).

2145504115 is a wasteful number, since it uses less digits than its factorization.

2145504115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7470.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 2145504115 is about 46319.5867317488. The cubic root of 2145504115 is about 1289.7626138113.

Adding to 2145504115 its reverse (5114055412), we get a palindrome (7259559527).

The spelling of 2145504115 in words is "two billion, one hundred forty-five million, five hundred four thousand, one hundred fifteen".