2125513 has 6 divisors (see below), whose sum is σ = 2301774. Its totient is φ = 1961856.

The previous prime is 2125477. The next prime is 2125517. The reversal of 2125513 is 3155212.

It can be written as a sum of positive squares in 3 ways, for example, as 131769 + 1993744 = 363^2 + 1412^2 .

It is not a de Polignac number, because 2125513 - 2⁹ = 2125001 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125517) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6120 + ... + 6457.

It is an arithmetic number, because the mean of its divisors is an integer number (383629).

2^2125513 is an apocalyptic number.

It is an amenable number.

2125513 is a deficient number, since it is larger than the sum of its proper divisors (176261).

2125513 is a wasteful number, since it uses less digits than its factorization.

2125513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12603 (or 12590 counting only the distinct ones).

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

The square root of 2125513 is about 1457.9139206414. The cubic root of 2125513 is about 128.5744243276.

The spelling of 2125513 in words is "two million, one hundred twenty-five thousand, five hundred thirteen".