2113515 has 24 divisors (see below), whose sum is σ = 3723408. Its totient is φ = 1108800.

The previous prime is 2113513. The next prime is 2113523. The reversal of 2113515 is 5153112.

It is not a de Polignac number, because 2113515 - 2¹ = 2113513 is a prime.

2113515 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2113511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2665 + ... + 3365.

It is an arithmetic number, because the mean of its divisors is an integer number (155142).

2^2113515 is an apocalyptic number.

2113515 is a deficient number, since it is larger than the sum of its proper divisors (1609893).

2113515 is a wasteful number, since it uses less digits than its factorization.

2113515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779 (or 776 counting only the distinct ones).

The product of its digits is 150, while the sum is 18.

The square root of 2113515 is about 1453.7933140581. The cubic root of 2113515 is about 128.3320439892.

Adding to 2113515 its reverse (5153112), we get a palindrome (7266627).

It can be divided in two parts, 2113 and 515, that added together give a triangular number (2628 = T₇₂).

The spelling of 2113515 in words is "two million, one hundred thirteen thousand, five hundred fifteen".