2516502540 has 96 divisors (see below), whose sum is σ = 7297407936. Its totient is φ = 647562240.

The previous prime is 2516502539. The next prime is 2516502559. The reversal of 2516502540 is 452056152.

2516502540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2516502498 and 2516502507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187494 + ... + 200466.

It is an arithmetic number, because the mean of its divisors is an integer number (76014666).

Almost surely, 2^2516502540 is an apocalyptic number.

2516502540 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 2516502540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3648703968).

2516502540 is an abundant number, since it is smaller than the sum of its proper divisors (4780905396).

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

2516502540 is a wasteful number, since it uses less digits than its factorization.

2516502540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13099 (or 13097 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 2516502540 is about 50164.7539613223. The cubic root of 2516502540 is about 1360.1885803954.

Adding to 2516502540 its reverse (452056152), we get a palindrome (2968558692).

The spelling of 2516502540 in words is "two billion, five hundred sixteen million, five hundred two thousand, five hundred forty".