2521040 has 20 divisors (see below), whose sum is σ = 5861604. Its totient is φ = 1008384.

The previous prime is 2521039. The next prime is 2521063. The reversal of 2521040 is 401252.

It can be written as a sum of positive squares in 2 ways, for example, as 283024 + 2238016 = 532^2 + 1496^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15677 + ... + 15836.

2^2521040 is an apocalyptic number.

2521040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2521040 is an abundant number, since it is smaller than the sum of its proper divisors (3340564).

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

2521040 is a wasteful number, since it uses less digits than its factorization.

2521040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31526 (or 31520 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 2521040 is about 1587.7783220588. The cubic root of 2521040 is about 136.1005599978.

2521040 divided by its product of nonzero digits (80) gives a palindrome (31513).

Adding to 2521040 its reverse (401252), we get a palindrome (2922292).

The spelling of 2521040 in words is "two million, five hundred twenty-one thousand, forty".