2578313 has 4 divisors (see below), whose sum is σ = 2593920. Its totient is φ = 2562708.

The previous prime is 2578297. The next prime is 2578343. The reversal of 2578313 is 3138752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2578313 - 2⁴ = 2578297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7553 + ... + 7886.

It is an arithmetic number, because the mean of its divisors is an integer number (648480).

2^2578313 is an apocalyptic number.

It is an amenable number.

2578313 is a deficient number, since it is larger than the sum of its proper divisors (15607).

2578313 is a wasteful number, since it uses less digits than its factorization.

2578313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15606.

The product of its digits is 5040, while the sum is 29.

The square root of 2578313 is about 1605.7126143865. The cubic root of 2578313 is about 137.1234967193.

The spelling of 2578313 in words is "two million, five hundred seventy-eight thousand, three hundred thirteen".