2521744 has 15 divisors (see below), whose sum is σ = 4898217. Its totient is φ = 1257696.

The previous prime is 2521733. The next prime is 2521747. The reversal of 2521744 is 4471252.

The square root of 2521744 is 1588.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1690000 + 831744 = 1300^2 + 912^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2521747) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6154 + ... + 6550.

2^2521744 is an apocalyptic number.

2521744 is the 1588-th square number.

It is an amenable number.

2521744 is a deficient number, since it is larger than the sum of its proper divisors (2376473).

2521744 is an frugal number, since it uses more digits than its factorization.

2521744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802 (or 399 counting only the distinct ones).

The product of its digits is 2240, while the sum is 25.

The cubic root of 2521744 is about 136.1132275050.

Multiplying 2521744 by its sum of digits (25), we get a square (63043600 = 7940²).

Adding to 2521744 its reverse (4471252), we get a palindrome (6992996).

The spelling of 2521744 in words is "two million, five hundred twenty-one thousand, seven hundred forty-four".