2052540 has 120 divisors (see below), whose sum is σ = 7399392. Its totient is φ = 466560.

The previous prime is 2052521. The next prime is 2052553. The reversal of 2052540 is 452502.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

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 39 ways as a sum of consecutive naturals, for example, 11250 + ... + 11430.

2^2052540 is an apocalyptic number.

2052540 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 2052540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3699696).

2052540 is an abundant number, since it is smaller than the sum of its proper divisors (5346852).

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

2052540 is a wasteful number, since it uses less digits than its factorization.

2052540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2052540 is about 1432.6688382177. The cubic root of 2052540 is about 127.0858534542.

The spelling of 2052540 in words is "two million, fifty-two thousand, five hundred forty".