47992457 has 2 divisors, whose sum is σ = 47992458. Its totient is φ = 47992456.

The previous prime is 47992409. The next prime is 47992459. The reversal of 47992457 is 75429974.

47992457 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., 43309561 + 4682896 = 6581^2 + 2164^2 .

It is a cyclic number.

It is not a de Polignac number, because 47992457 - 2⁶ = 47992393 is a prime.

Together with 47992459, 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 (47992459) 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, 23996228 + 23996229.

It is an arithmetic number, because the mean of its divisors is an integer number (23996229).

Almost surely, 2^47992457 is an apocalyptic number.

It is an amenable number.

47992457 is a deficient number, since it is larger than the sum of its proper divisors (1).

47992457 is an equidigital number, since it uses as much as digits as its factorization.

47992457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 635040, while the sum is 47.

The square root of 47992457 is about 6927.6588397524. The cubic root of 47992457 is about 363.4050807072.

The spelling of 47992457 in words is "forty-seven million, nine hundred ninety-two thousand, four hundred fifty-seven".