47157841 has 2 divisors, whose sum is σ = 47157842. Its totient is φ = 47157840.

The previous prime is 47157839. The next prime is 47157853. The reversal of 47157841 is 14875174.

47157841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31979025 + 15178816 = 5655^2 + 3896^2 .

It is a cyclic number.

It is not a de Polignac number, because 47157841 - 2¹ = 47157839 is a prime.

Together with 47157839, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 47157841.

It is not a weakly prime, because it can be changed into another prime (47152841) 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, 23578920 + 23578921.

It is an arithmetic number, because the mean of its divisors is an integer number (23578921).

Almost surely, 2^47157841 is an apocalyptic number.

It is an amenable number.

47157841 is a deficient number, since it is larger than the sum of its proper divisors (1).

47157841 is an equidigital number, since it uses as much as digits as its factorization.

47157841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 37.

The square root of 47157841 is about 6867.1566896351. The cubic root of 47157841 is about 361.2861429417.

The spelling of 47157841 in words is "forty-seven million, one hundred fifty-seven thousand, eight hundred forty-one".