2520581121 has 12 divisors (see below), whose sum is σ = 3641347840. Its totient is φ = 1680152760.

The previous prime is 2520581113. The next prime is 2520581159. The reversal of 2520581121 is 1211850252.

It is a happy number.

It is not a de Polignac number, because 2520581121 - 2³ = 2520581113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520581111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70116 + ... + 99786.

Almost surely, 2^2520581121 is an apocalyptic number.

It is an amenable number.

2520581121 is a deficient number, since it is larger than the sum of its proper divisors (1120766719).

2520581121 is a wasteful number, since it uses less digits than its factorization.

2520581121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39116 (or 39113 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 27.

The square root of 2520581121 is about 50205.3893620994. The cubic root of 2520581121 is about 1360.9230183472.

The spelling of 2520581121 in words is "two billion, five hundred twenty million, five hundred eighty-one thousand, one hundred twenty-one".