2522540 has 12 divisors (see below), whose sum is σ = 5297376. Its totient is φ = 1009008.

The previous prime is 2522503. The next prime is 2522543. The reversal of 2522540 is 452252.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 126127 = 2522540 / (2 + 5 + 2 + 2 + 5 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (2522543) 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 3 ways as a sum of consecutive naturals, for example, 63044 + ... + 63083.

It is an arithmetic number, because the mean of its divisors is an integer number (441448).

2^2522540 is an apocalyptic number.

2522540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2522540 is an abundant number, since it is smaller than the sum of its proper divisors (2774836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2522540 is a wasteful number, since it uses less digits than its factorization.

2522540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126136 (or 126134 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2522540 is about 1588.2506099479. The cubic root of 2522540 is about 136.1275475855.

Adding to 2522540 its reverse (452252), we get a palindrome (2974792).

The spelling of 2522540 in words is "two million, five hundred twenty-two thousand, five hundred forty".