47421571 has 2 divisors, whose sum is σ = 47421572. Its totient is φ = 47421570.

The previous prime is 47421559. The next prime is 47421581. The reversal of 47421571 is 17512474.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47421571 - 2⁷ = 47421443 is a prime.

It is a super-2 number, since 2×47421571² = 4497610792216082, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47421541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23710785 + 23710786.

It is an arithmetic number, because the mean of its divisors is an integer number (23710786).

Almost surely, 2^47421571 is an apocalyptic number.

47421571 is a deficient number, since it is larger than the sum of its proper divisors (1).

47421571 is an equidigital number, since it uses as much as digits as its factorization.

47421571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 31.

The square root of 47421571 is about 6886.3321877470. The cubic root of 47421571 is about 361.9583883266.

The spelling of 47421571 in words is "forty-seven million, four hundred twenty-one thousand, five hundred seventy-one".