2215023505 has 4 divisors (see below), whose sum is σ = 2658028212. Its totient is φ = 1772018800.

The previous prime is 2215023493. The next prime is 2215023511. The reversal of 2215023505 is 5053205122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1688963409 + 526060096 = 41097^2 + 22936^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2215023505 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2215023505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221502346 + ... + 221502355.

It is an arithmetic number, because the mean of its divisors is an integer number (664507053).

Almost surely, 2^2215023505 is an apocalyptic number.

It is an amenable number.

2215023505 is a deficient number, since it is larger than the sum of its proper divisors (443004707).

2215023505 is an equidigital number, since it uses as much as digits as its factorization.

2215023505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443004706.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 2215023505 is about 47064.0362166272. The cubic root of 2215023505 is about 1303.5452548316.

Adding to 2215023505 its reverse (5053205122), we get a palindrome (7268228627).

The spelling of 2215023505 in words is "two billion, two hundred fifteen million, twenty-three thousand, five hundred five".