2552540 has 48 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 939840.

The previous prime is 2552531. The next prime is 2552581. The reversal of 2552540 is 452552.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 14171 + ... + 14349.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^2552540 is an apocalyptic number.

2552540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2552540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903040).

2552540 is an abundant number, since it is smaller than the sum of its proper divisors (3253540).

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

2552540 is a wasteful number, since it uses less digits than its factorization.

2552540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 240 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 2552540 is about 1597.6670491689. The cubic root of 2552540 is about 136.6650670710.

The spelling of 2552540 in words is "two million, five hundred fifty-two thousand, five hundred forty".