2513405 has 6 divisors (see below), whose sum is σ = 3020346. Its totient is φ = 2007888.

The previous prime is 2513363. The next prime is 2513443. The reversal of 2513405 is 5043152.

It can be written as a sum of positive squares in 3 ways, for example, as 20164 + 2493241 = 142^2 + 1579^2 .

It is not a de Polignac number, because 2513405 - 2¹⁴ = 2497021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3191 + ... + 3899.

It is an arithmetic number, because the mean of its divisors is an integer number (503391).

2^2513405 is an apocalyptic number.

It is an amenable number.

2513405 is a deficient number, since it is larger than the sum of its proper divisors (506941).

2513405 is an frugal number, since it uses more digits than its factorization.

2513405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2513405 is about 1585.3721960474. The cubic root of 2513405 is about 135.9630270025.

Multiplying 2513405 by its sum of digits (20), we get a square (50268100 = 7090²).

Adding to 2513405 its reverse (5043152), we get a palindrome (7556557).

The spelling of 2513405 in words is "two million, five hundred thirteen thousand, four hundred five".