2520710981 has 8 divisors (see below), whose sum is σ = 2654513280. Its totient is φ = 2387022048.

The previous prime is 2520710963. The next prime is 2520710987. The reversal of 2520710981 is 1890170252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2520710981 - 2²⁶ = 2453602117 is a prime.

It is a super-2 number, since 2×2520710981² = 12707967699467964722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2520710987) 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, 19385 + ... + 73601.

It is an arithmetic number, because the mean of its divisors is an integer number (331814160).

Almost surely, 2^2520710981 is an apocalyptic number.

It is an amenable number.

2520710981 is a deficient number, since it is larger than the sum of its proper divisors (133802299).

2520710981 is a wasteful number, since it uses less digits than its factorization.

2520710981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56683.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 2520710981 is about 50206.6826328926. The cubic root of 2520710981 is about 1360.9463894694.

The spelling of 2520710981 in words is "two billion, five hundred twenty million, seven hundred ten thousand, nine hundred eighty-one".