47457191 has 2 divisors, whose sum is σ = 47457192. Its totient is φ = 47457190.

The previous prime is 47457143. The next prime is 47457209. The reversal of 47457191 is 19175474.

47457191 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 is a cyclic number.

It is not a de Polignac number, because 47457191 - 2¹⁸ = 47195047 is a prime.

It is a super-2 number, since 2×47457191² = 4504369955220962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47457691) 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, 23728595 + 23728596.

It is an arithmetic number, because the mean of its divisors is an integer number (23728596).

Almost surely, 2^47457191 is an apocalyptic number.

47457191 is a deficient number, since it is larger than the sum of its proper divisors (1).

47457191 is an equidigital number, since it uses as much as digits as its factorization.

47457191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35280, while the sum is 38.

The square root of 47457191 is about 6888.9179847056. The cubic root of 47457191 is about 362.0489921788.

The spelling of 47457191 in words is "forty-seven million, four hundred fifty-seven thousand, one hundred ninety-one".