2578741 has 4 divisors (see below), whose sum is σ = 2813184. Its totient is φ = 2344300.

The previous prime is 2578733. The next prime is 2578757. The reversal of 2578741 is 1478752.

It is a happy number.

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 2578741 - 2³ = 2578733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2578697 and 2578706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578721) 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, 117205 + ... + 117226.

It is an arithmetic number, because the mean of its divisors is an integer number (703296).

2^2578741 is an apocalyptic number.

It is an amenable number.

2578741 is a deficient number, since it is larger than the sum of its proper divisors (234443).

2578741 is a wasteful number, since it uses less digits than its factorization.

2578741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234442.

The product of its digits is 15680, while the sum is 34.

The square root of 2578741 is about 1605.8458830162. The cubic root of 2578741 is about 137.1310838004.

It can be divided in two parts, 257 and 8741, that added together give a palindrome (8998).

The spelling of 2578741 in words is "two million, five hundred seventy-eight thousand, seven hundred forty-one".