2578115 has 8 divisors (see below), whose sum is σ = 3193728. Its totient is φ = 1995840.

The previous prime is 2578111. The next prime is 2578117. The reversal of 2578115 is 5118752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2578115 - 2² = 2578111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2578111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8162 + ... + 8471.

It is an arithmetic number, because the mean of its divisors is an integer number (399216).

2^2578115 is an apocalyptic number.

2578115 is a deficient number, since it is larger than the sum of its proper divisors (615613).

2578115 is a wasteful number, since it uses less digits than its factorization.

2578115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16669.

The product of its digits is 2800, while the sum is 29.

The square root of 2578115 is about 1605.6509583343. The cubic root of 2578115 is about 137.1199865239.

Subtracting from 2578115 its product of digits (2800), we obtain a triangular number (2575315 = T₂₂₆₉).

The spelling of 2578115 in words is "two million, five hundred seventy-eight thousand, one hundred fifteen".