2522420 has 24 divisors (see below), whose sum is σ = 5481000. Its totient is φ = 973952.

The previous prime is 2522419. The next prime is 2522431. The reversal of 2522420 is 242252.

It can be written as a sum of positive squares in 4 ways, for example, as 676 + 2521744 = 26^2 + 1588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1595 + ... + 2754.

It is an arithmetic number, because the mean of its divisors is an integer number (228375).

2^2522420 is an apocalyptic number.

2522420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2522420 is an abundant number, since it is smaller than the sum of its proper divisors (2958580).

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

2522420 is a wasteful number, since it uses less digits than its factorization.

2522420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4387 (or 4385 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 2522420 is about 1588.2128320852. The cubic root of 2522420 is about 136.1253889722.

Adding to 2522420 its reverse (242252), we get a palindrome (2764672).

It can be divided in two parts, 2522 and 420, that multiplied together give a triangular number (1059240 = T₁₄₅₅).

The spelling of 2522420 in words is "two million, five hundred twenty-two thousand, four hundred twenty".