2520641 has 8 divisors (see below), whose sum is σ = 2755584. Its totient is φ = 2295360.

The previous prime is 2520631. The next prime is 2520649. The reversal of 2520641 is 1460252.

It is a happy number.

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 2520641 - 2⁶ = 2520577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520649) 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, 1865 + ... + 2918.

It is an arithmetic number, because the mean of its divisors is an integer number (344448).

2^2520641 is an apocalyptic number.

It is an amenable number.

2520641 is a deficient number, since it is larger than the sum of its proper divisors (234943).

2520641 is a wasteful number, since it uses less digits than its factorization.

2520641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4831.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2520641 is about 1587.6526698242. The cubic root of 2520641 is about 136.0933794971.

Adding to 2520641 its reverse (1460252), we get a palindrome (3980893).

The spelling of 2520641 in words is "two million, five hundred twenty thousand, six hundred forty-one".