2580121 has 8 divisors (see below), whose sum is σ = 2674440. Its totient is φ = 2487168.

The previous prime is 2580119. The next prime is 2580131. The reversal of 2580121 is 1210852.

2580121 = 149² + 150² + ... + 222².

It can be written as a sum of positive squares in 4 ways, for example, as 1413721 + 1166400 = 1189^2 + 1080^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2580121 - 2¹ = 2580119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4815 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (334305).

2^2580121 is an apocalyptic number.

It is an amenable number.

2580121 is a deficient number, since it is larger than the sum of its proper divisors (94319).

2580121 is a wasteful number, since it uses less digits than its factorization.

2580121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2580121 is about 1606.2755056341. The cubic root of 2580121 is about 137.1555411032.

Adding to 2580121 its reverse (1210852), we get a palindrome (3790973).

It can be divided in two parts, 2580 and 121, that added together give a triangular number (2701 = T₇₃).

The spelling of 2580121 in words is "two million, five hundred eighty thousand, one hundred twenty-one".