2521045440 has 84 divisors (see below), whose sum is σ = 8671355784. Its totient is φ = 672278016.

The previous prime is 2521045411. The next prime is 2521045451. The reversal of 2521045440 is 445401252.

2521045440 is a `hidden beast` number, since 2 + 5 + 210 + 4 + 5 + 440 = 666.

It is a super-2 number, since 2×2521045440² = 12711340221089587200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 434802 + ... + 440561.

It is an arithmetic number, because the mean of its divisors is an integer number (103230426).

Almost surely, 2^2521045440 is an apocalyptic number.

2521045440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2521045440 is an abundant number, since it is smaller than the sum of its proper divisors (6150310344).

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

2521045440 is a wasteful number, since it uses less digits than its factorization.

2521045440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875386 (or 875373 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 2521045440 is about 50210.0133439536. The cubic root of 2521045440 is about 1361.0065789215.

Adding to 2521045440 its reverse (445401252), we get a palindrome (2966446692).

The spelling of 2521045440 in words is "two billion, five hundred twenty-one million, forty-five thousand, four hundred forty".