2113553215 has 16 divisors (see below), whose sum is σ = 2546938368. Its totient is φ = 1683745056.

The previous prime is 2113553213. The next prime is 2113553219. The reversal of 2113553215 is 5123553112.

It is a cyclic number.

It is not a de Polignac number, because 2113553215 - 2¹ = 2113553213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113553213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2149614 + ... + 2150596.

It is an arithmetic number, because the mean of its divisors is an integer number (159183648).

Almost surely, 2^2113553215 is an apocalyptic number.

2113553215 is a deficient number, since it is larger than the sum of its proper divisors (433385153).

2113553215 is an equidigital number, since it uses as much as digits as its factorization.

2113553215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2358.

The product of its digits is 4500, while the sum is 28.

The square root of 2113553215 is about 45973.3968181600. The cubic root of 2113553215 is about 1283.3281745262.

The spelling of 2113553215 in words is "two billion, one hundred thirteen million, five hundred fifty-three thousand, two hundred fifteen".