2520755281 has 16 divisors (see below), whose sum is σ = 2774661120. Its totient is φ = 2271059280.

The previous prime is 2520755269. The next prime is 2520755287. The reversal of 2520755281 is 1825570252.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2520755281 is a prime.

It is a super-2 number, since 2×2520755281² = 12708414373378777922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2520755281.

It is not an unprimeable number, because it can be changed into a prime (2520755287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 672310 + ... + 676048.

It is an arithmetic number, because the mean of its divisors is an integer number (173416320).

Almost surely, 2^2520755281 is an apocalyptic number.

It is an amenable number.

2520755281 is a deficient number, since it is larger than the sum of its proper divisors (253905839).

2520755281 is a wasteful number, since it uses less digits than its factorization.

2520755281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 2520755281 is about 50207.1238072846. The cubic root of 2520755281 is about 1360.9543620312.

The spelling of 2520755281 in words is "two billion, five hundred twenty million, seven hundred fifty-five thousand, two hundred eighty-one".