47057449 has 2 divisors, whose sum is σ = 47057450. Its totient is φ = 47057448.

The previous prime is 47057447. The next prime is 47057467. The reversal of 47057449 is 94475074.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44983849 + 2073600 = 6707^2 + 1440^2 .

It is a cyclic number.

It is not a de Polignac number, because 47057449 - 2¹ = 47057447 is a prime.

Together with 47057447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47057441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23528724 + 23528725.

It is an arithmetic number, because the mean of its divisors is an integer number (23528725).

Almost surely, 2^47057449 is an apocalyptic number.

It is an amenable number.

47057449 is a deficient number, since it is larger than the sum of its proper divisors (1).

47057449 is an equidigital number, since it uses as much as digits as its factorization.

47057449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 47057449 is about 6859.8432197828. The cubic root of 47057449 is about 361.0295860529.

The spelling of 47057449 in words is "forty-seven million, fifty-seven thousand, four hundred forty-nine".