47277521 has 2 divisors, whose sum is σ = 47277522. Its totient is φ = 47277520.

The previous prime is 47277497. The next prime is 47277541. The reversal of 47277521 is 12577274.

47277521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42719296 + 4558225 = 6536^2 + 2135^2 .

It is a cyclic number.

It is not a de Polignac number, because 47277521 - 2⁶ = 47277457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47277541) 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, 23638760 + 23638761.

It is an arithmetic number, because the mean of its divisors is an integer number (23638761).

Almost surely, 2^47277521 is an apocalyptic number.

It is an amenable number.

47277521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47277521 is an equidigital number, since it uses as much as digits as its factorization.

47277521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27440, while the sum is 35.

The square root of 47277521 is about 6875.8651092063. The cubic root of 47277521 is about 361.5915159770.

The spelling of 47277521 in words is "forty-seven million, two hundred seventy-seven thousand, five hundred twenty-one".