52281782830181 has 4 divisors (see below), whose sum is σ = 52281867197664. Its totient is φ = 52281698462700.

The previous prime is 52281782830177. The next prime is 52281782830219. The reversal of 52281782830181 is 18103828718225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52281782830181 - 2² = 52281782830177 is a prime.

It is a super-2 number, since 2×52281782830181² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52281782130181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41247275 + ... + 42495896.

It is an arithmetic number, because the mean of its divisors is an integer number (13070466799416).

Almost surely, 2^{52281782830181} is an apocalyptic number.

It is an amenable number.

52281782830181 is a deficient number, since it is larger than the sum of its proper divisors (84367483).

52281782830181 is an equidigital number, since it uses as much as digits as its factorization.

52281782830181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84367482.

The product of its (nonzero) digits is 3440640, while the sum is 56.

The spelling of 52281782830181 in words is "fifty-two trillion, two hundred eighty-one billion, seven hundred eighty-two million, eight hundred thirty thousand, one hundred eighty-one".