47277481 has 2 divisors, whose sum is σ = 47277482. Its totient is φ = 47277480.

The previous prime is 47277479. The next prime is 47277487. The reversal of 47277481 is 18477274.

47277481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24800400 + 22477081 = 4980^2 + 4741^2 .

It is a cyclic number.

It is not a de Polignac number, because 47277481 - 2¹ = 47277479 is a prime.

It is a super-2 number, since 2×47277481² = 4470320419410722, which contains 22 as substring.

Together with 47277479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47277487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23638740 + 23638741.

It is an arithmetic number, because the mean of its divisors is an integer number (23638741).

Almost surely, 2^47277481 is an apocalyptic number.

It is an amenable number.

47277481 is a deficient number, since it is larger than the sum of its proper divisors (1).

47277481 is an equidigital number, since it uses as much as digits as its factorization.

47277481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87808, while the sum is 40.

The square root of 47277481 is about 6875.8622004808. The cubic root of 47277481 is about 361.5914140000.

The spelling of 47277481 in words is "forty-seven million, two hundred seventy-seven thousand, four hundred eighty-one".