2113525 has 12 divisors (see below), whose sum is σ = 2775492. Its totient is φ = 1591040.

The previous prime is 2113523. The next prime is 2113567. The reversal of 2113525 is 5253112.

It can be written as a sum of positive squares in 6 ways, for example, as 13924 + 2099601 = 118^2 + 1449^2 .

It is not a de Polignac number, because 2113525 - 2¹ = 2113523 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 (2113523) 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 11 ways as a sum of consecutive naturals, for example, 2062 + ... + 2911.

It is an arithmetic number, because the mean of its divisors is an integer number (231291).

2^2113525 is an apocalyptic number.

2113525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2113525 is a deficient number, since it is larger than the sum of its proper divisors (661967).

2113525 is a wasteful number, since it uses less digits than its factorization.

2113525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000 (or 4995 counting only the distinct ones).

The product of its digits is 300, while the sum is 19.

The square root of 2113525 is about 1453.7967533325. The cubic root of 2113525 is about 128.3322463880.

Adding to 2113525 its reverse (5253112), we get a palindrome (7366637).

The spelling of 2113525 in words is "two million, one hundred thirteen thousand, five hundred twenty-five".