47275729 has 2 divisors, whose sum is σ = 47275730. Its totient is φ = 47275728.

The previous prime is 47275727. The next prime is 47275757. The reversal of 47275729 is 92757274.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38155329 + 9120400 = 6177^2 + 3020^2 .

It is a cyclic number.

It is not a de Polignac number, because 47275729 - 2¹ = 47275727 is a prime.

Together with 47275727, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47275727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23637864 + 23637865.

It is an arithmetic number, because the mean of its divisors is an integer number (23637865).

Almost surely, 2^47275729 is an apocalyptic number.

It is an amenable number.

47275729 is a deficient number, since it is larger than the sum of its proper divisors (1).

47275729 is an equidigital number, since it uses as much as digits as its factorization.

47275729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 246960, while the sum is 43.

The square root of 47275729 is about 6875.7347970962. The cubic root of 47275729 is about 361.5869473492.

The spelling of 47275729 in words is "forty-seven million, two hundred seventy-five thousand, seven hundred twenty-nine".