47522181 has 16 divisors (see below), whose sum is σ = 74100224. Its totient is φ = 26523504.

The previous prime is 47522179. The next prime is 47522203. The reversal of 47522181 is 18122574.

It is not a de Polignac number, because 47522181 - 2¹ = 47522179 is a prime.

It is a super-2 number, since 2×47522181² = 4516715373993522, which 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 (47522141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25411 + ... + 27216.

It is an arithmetic number, because the mean of its divisors is an integer number (4631264).

Almost surely, 2^47522181 is an apocalyptic number.

It is an amenable number.

47522181 is a deficient number, since it is larger than the sum of its proper divisors (26578043).

47522181 is a wasteful number, since it uses less digits than its factorization.

47522181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52680.

The product of its digits is 4480, while the sum is 30.

The square root of 47522181 is about 6893.6333671004. The cubic root of 47522181 is about 362.2141854885.

The spelling of 47522181 in words is "forty-seven million, five hundred twenty-two thousand, one hundred eighty-one".