2578141 has 4 divisors (see below), whose sum is σ = 2613532. Its totient is φ = 2542752.

The previous prime is 2578133. The next prime is 2578153. The reversal of 2578141 is 1418752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1390041 + 1188100 = 1179^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 2578141 - 2³ = 2578133 is a prime.

It is a super-2 number, since 2×2578141² = 13293622031762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 17586 + ... + 17731.

It is an arithmetic number, because the mean of its divisors is an integer number (653383).

2^2578141 is an apocalyptic number.

It is an amenable number.

2578141 is a deficient number, since it is larger than the sum of its proper divisors (35391).

2578141 is an equidigital number, since it uses as much as digits as its factorization.

2578141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35390.

The product of its digits is 2240, while the sum is 28.

The square root of 2578141 is about 1605.6590547187. The cubic root of 2578141 is about 137.1204474689.

The spelling of 2578141 in words is "two million, five hundred seventy-eight thousand, one hundred forty-one".