2531520520 has 32 divisors (see below), whose sum is σ = 5700409920. Its totient is φ = 1011810240.

The previous prime is 2531520517. The next prime is 2531520521. The reversal of 2531520520 is 250251352.

It is a happy number.

It is a super-2 number, since 2×2531520520² = 12817192286362140800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2531520521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27835 + ... + 76405.

It is an arithmetic number, because the mean of its divisors is an integer number (178137810).

Almost surely, 2^2531520520 is an apocalyptic number.

2531520520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531520520 is an abundant number, since it is smaller than the sum of its proper divisors (3168889400).

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

2531520520 is a wasteful number, since it uses less digits than its factorization.

2531520520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49885 (or 49881 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 2531520520 is about 50314.2178712936. The cubic root of 2531520520 is about 1362.8889927675. Note that the first 3 decimals are identical.

Adding to 2531520520 its reverse (250251352), we get a palindrome (2781771872).

The spelling of 2531520520 in words is "two billion, five hundred thirty-one million, five hundred twenty thousand, five hundred twenty".