2530520181 has 36 divisors (see below), whose sum is σ = 4258885644. Its totient is φ = 1443657600.

The previous prime is 2530520143. The next prime is 2530520183. The reversal of 2530520181 is 1810250352.

It is a happy number.

2530520181 is a `hidden beast` number, since 2 + 530 + 52 + 0 + 1 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2048015025 + 482505156 = 45255^2 + 21966^2 .

It is not a de Polignac number, because 2530520181 - 2²⁶ = 2463411317 is a prime.

It is a super-3 number, since 3×2530520181³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530520183) 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 35 ways as a sum of consecutive naturals, for example, 287161 + ... + 295841.

It is an arithmetic number, because the mean of its divisors is an integer number (118302379).

Almost surely, 2^2530520181 is an apocalyptic number.

2530520181 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2530520181 is a deficient number, since it is larger than the sum of its proper divisors (1728365463).

2530520181 is a wasteful number, since it uses less digits than its factorization.

2530520181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9362 (or 9352 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2530520181 is about 50304.2759713327. The cubic root of 2530520181 is about 1362.7094523664.

The spelling of 2530520181 in words is "two billion, five hundred thirty million, five hundred twenty thousand, one hundred eighty-one".