181005522 has 16 divisors (see below), whose sum is σ = 364617120. Its totient is φ = 59900832.

The previous prime is 181005521. The next prime is 181005523. The reversal of 181005522 is 225500181.

It is an interprime number because it is at equal distance from previous prime (181005521) and next prime (181005523).

It is a junction number, because it is equal to n+sod(n) for n = 181005492 and 181005501.

It is not an unprimeable number, because it can be changed into a prime (181005521) 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, 107683 + ... + 109350.

It is an arithmetic number, because the mean of its divisors is an integer number (22788570).

Almost surely, 2^181005522 is an apocalyptic number.

181005522 is an abundant number, since it is smaller than the sum of its proper divisors (183611598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181005522 is a wasteful number, since it uses less digits than its factorization.

181005522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217177.

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 181005522 is about 13453.8292690223. The cubic root of 181005522 is about 565.6710350168.

The spelling of 181005522 in words is "one hundred eighty-one million, five thousand, five hundred twenty-two".