2520538811 has 4 divisors (see below), whose sum is σ = 2880615792. Its totient is φ = 2160461832.

The previous prime is 2520538777. The next prime is 2520538819. The reversal of 2520538811 is 1188350252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2520538811 - 2¹⁰ = 2520537787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2520538819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180038480 + ... + 180038493.

It is an arithmetic number, because the mean of its divisors is an integer number (720153948).

Almost surely, 2^2520538811 is an apocalyptic number.

2520538811 is a deficient number, since it is larger than the sum of its proper divisors (360076981).

2520538811 is an equidigital number, since it uses as much as digits as its factorization.

2520538811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360076980.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 2520538811 is about 50204.9679912257. The cubic root of 2520538811 is about 1360.9154035721.

The spelling of 2520538811 in words is "two billion, five hundred twenty million, five hundred thirty-eight thousand, eight hundred eleven".