2521077540 has 96 divisors (see below), whose sum is σ = 7192039680. Its totient is φ = 659673600.

The previous prime is 2521077539. The next prime is 2521077563. The reversal of 2521077540 is 457701252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3004441 + ... + 3005279.

It is an arithmetic number, because the mean of its divisors is an integer number (74917080).

Almost surely, 2^2521077540 is an apocalyptic number.

2521077540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2521077540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3596019840).

2521077540 is an abundant number, since it is smaller than the sum of its proper divisors (4670962140).

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

2521077540 is a wasteful number, since it uses less digits than its factorization.

2521077540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1733 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 33.

The square root of 2521077540 is about 50210.3330002899. Note that the first 3 decimals coincide. The cubic root of 2521077540 is about 1361.0123553777.

Adding to 2521077540 its reverse (457701252), we get a palindrome (2978778792).

The spelling of 2521077540 in words is "two billion, five hundred twenty-one million, seventy-seven thousand, five hundred forty".