2578135 has 24 divisors (see below), whose sum is σ = 3816720. Its totient is φ = 1661184.

The previous prime is 2578133. The next prime is 2578153. The reversal of 2578135 is 5318752.

It is not a de Polignac number, because 2578135 - 2¹ = 2578133 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 5⁷ + 7⁴ + 8³ + 1 + 3⁹ + 5⁹ .

2578135 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2578097 and 2578106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578133) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3856 + ... + 4474.

It is an arithmetic number, because the mean of its divisors is an integer number (159030).

2^2578135 is an apocalyptic number.

2578135 is a deficient number, since it is larger than the sum of its proper divisors (1238585).

2578135 is a wasteful number, since it uses less digits than its factorization.

2578135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655 (or 648 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 2578135 is about 1605.6571863259. The cubic root of 2578135 is about 137.1203410973.

The spelling of 2578135 in words is "two million, five hundred seventy-eight thousand, one hundred thirty-five".