2533544 has 32 divisors (see below), whose sum is σ = 5420520. Its totient is φ = 1099776.

The previous prime is 2533507. The next prime is 2533549. The reversal of 2533544 is 4453352.

It can be written as a sum of positive squares in 4 ways, for example, as 2365444 + 168100 = 1538^2 + 410^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a d-powerful number, because it can be written as 2¹⁹ + 5³ + 3⁹ + 3⁹ + 5⁹ + 4⁴ + 4⁷ .

It is not an unprimeable number, because it can be changed into a prime (2533549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1052 + ... + 2484.

2^2533544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2533544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2710260).

2533544 is an abundant number, since it is smaller than the sum of its proper divisors (2886976).

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

2533544 is a wasteful number, since it uses less digits than its factorization.

2533544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1465 counting only the distinct ones).

The product of its digits is 7200, while the sum is 26.

The square root of 2533544 is about 1591.7110290502. The cubic root of 2533544 is about 136.3252021515.

Adding to 2533544 its reverse (4453352), we get a palindrome (6986896).

The spelling of 2533544 in words is "two million, five hundred thirty-three thousand, five hundred forty-four".