47081181 has 32 divisors (see below), whose sum is σ = 75075840. Its totient is φ = 25675776.

The previous prime is 47081171. The next prime is 47081189. The reversal of 47081181 is 18118074.

It is not a de Polignac number, because 47081181 - 2¹⁵ = 47048413 is a prime.

It is a super-2 number, since 2×47081181² = 4433275208709522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47081189) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58675 + ... + 59471.

It is an arithmetic number, because the mean of its divisors is an integer number (2346120).

Almost surely, 2^47081181 is an apocalyptic number.

It is an amenable number.

47081181 is a deficient number, since it is larger than the sum of its proper divisors (27994659).

47081181 is a wasteful number, since it uses less digits than its factorization.

47081181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933.

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 47081181 is about 6861.5727788897. The cubic root of 47081181 is about 361.0902673009.

The spelling of 47081181 in words is "forty-seven million, eighty-one thousand, one hundred eighty-one".