2520445 has 16 divisors (see below), whose sum is σ = 3263040. Its totient is φ = 1862784.

The previous prime is 2520443. The next prime is 2520451. The reversal of 2520445 is 5440252.

It is a cyclic number.

It is not a de Polignac number, because 2520445 - 2¹ = 2520443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3777 + ... + 4393.

It is an arithmetic number, because the mean of its divisors is an integer number (203940).

2^2520445 is an apocalyptic number.

It is an amenable number.

2520445 is a deficient number, since it is larger than the sum of its proper divisors (742595).

2520445 is a wasteful number, since it uses less digits than its factorization.

2520445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 2520445 is about 1587.5909422770. The cubic root of 2520445 is about 136.0898519561.

Adding to 2520445 its reverse (5440252), we get a palindrome (7960697).

The spelling of 2520445 in words is "two million, five hundred twenty thousand, four hundred forty-five".