2252540 has 36 divisors (see below), whose sum is σ = 4920888. Its totient is φ = 865920.

The previous prime is 2252539. The next prime is 2252557. The reversal of 2252540 is 452522.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 11 ways as a sum of consecutive naturals, for example, 33587 + ... + 33653.

2^2252540 is an apocalyptic number.

2252540 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 2252540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2460444).

2252540 is an abundant number, since it is smaller than the sum of its proper divisors (2668348).

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

2252540 is a wasteful number, since it uses less digits than its factorization.

2252540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 115 counting only the distinct ones).

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

The square root of 2252540 is about 1500.8464278533. The cubic root of 2252540 is about 131.0863599314.

The spelling of 2252540 in words is "two million, two hundred fifty-two thousand, five hundred forty".