47112881 has 2 divisors, whose sum is σ = 47112882. Its totient is φ = 47112880.

The previous prime is 47112869. The next prime is 47112883. The reversal of 47112881 is 18821174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46799281 + 313600 = 6841^2 + 560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47112881 is a prime.

It is a super-2 number, since 2×47112881² = 4439247112240322, which contains 22 as substring.

Together with 47112883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47112883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23556440 + 23556441.

It is an arithmetic number, because the mean of its divisors is an integer number (23556441).

Almost surely, 2^47112881 is an apocalyptic number.

It is an amenable number.

47112881 is a deficient number, since it is larger than the sum of its proper divisors (1).

47112881 is an equidigital number, since it uses as much as digits as its factorization.

47112881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 32.

The square root of 47112881 is about 6863.8823562179. The cubic root of 47112881 is about 361.1712904273.

The spelling of 47112881 in words is "forty-seven million, one hundred twelve thousand, eight hundred eighty-one".