2520637530 has 64 divisors (see below), whose sum is σ = 6221577600. Its totient is φ = 653312000.

The previous prime is 2520637501. The next prime is 2520637531. The reversal of 2520637530 is 357360252.

2520637530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2520637530² = 12707227115289001800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2520637491 and 2520637500.

It is not an unprimeable number, because it can be changed into a prime (2520637531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149530 + ... + 165530.

It is an arithmetic number, because the mean of its divisors is an integer number (97212150).

Almost surely, 2^2520637530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2520637530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3110788800).

2520637530 is an abundant number, since it is smaller than the sum of its proper divisors (3700940070).

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

2520637530 is a wasteful number, since it uses less digits than its factorization.

2520637530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16159.

The product of its (nonzero) digits is 37800, while the sum is 33.

The square root of 2520637530 is about 50205.9511412741. The cubic root of 2520637530 is about 1360.9331704683.

Adding to 2520637530 its reverse (357360252), we get a palindrome (2877997782).

The spelling of 2520637530 in words is "two billion, five hundred twenty million, six hundred thirty-seven thousand, five hundred thirty".