2109513 has 32 divisors (see below), whose sum is σ = 3594240. Its totient is φ = 1071360.

The previous prime is 2109509. The next prime is 2109521. The reversal of 2109513 is 3159012.

It is not a de Polignac number, because 2109513 - 2² = 2109509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2109513.

It is not an unprimeable number, because it can be changed into a prime (2109533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6628 + ... + 6938.

It is an arithmetic number, because the mean of its divisors is an integer number (112320).

2^2109513 is an apocalyptic number.

It is an amenable number.

2109513 is a deficient number, since it is larger than the sum of its proper divisors (1484727).

2109513 is a wasteful number, since it uses less digits than its factorization.

2109513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 2109513 is about 1452.4162626465. The cubic root of 2109513 is about 128.2509927004.

The spelling of 2109513 in words is "two million, one hundred nine thousand, five hundred thirteen".