2521043740 has 12 divisors (see below), whose sum is σ = 5294191896. Its totient is φ = 1008417488.

The previous prime is 2521043737. The next prime is 2521043741. The reversal of 2521043740 is 473401252.

It is a junction number, because it is equal to n+sod(n) for n = 2521043699 and 2521043708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521043741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63026074 + ... + 63026113.

It is an arithmetic number, because the mean of its divisors is an integer number (441182658).

Almost surely, 2^2521043740 is an apocalyptic number.

2521043740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2521043740 is an abundant number, since it is smaller than the sum of its proper divisors (2773148156).

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

2521043740 is a wasteful number, since it uses less digits than its factorization.

2521043740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126052196 (or 126052194 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2521043740 is about 50209.9964150566. The cubic root of 2521043740 is about 1361.0062730019.

Adding to 2521043740 its reverse (473401252), we get a palindrome (2994444992).

The spelling of 2521043740 in words is "two billion, five hundred twenty-one million, forty-three thousand, seven hundred forty".