47049851 has 2 divisors, whose sum is σ = 47049852. Its totient is φ = 47049850.

The previous prime is 47049841. The next prime is 47049853. The reversal of 47049851 is 15894074.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47049851 is a prime.

Together with 47049853, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 47049851 parts by 9700 straight cuts.

It is not a weakly prime, because it can be changed into another prime (47049853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23524925 + 23524926.

It is an arithmetic number, because the mean of its divisors is an integer number (23524926).

Almost surely, 2^47049851 is an apocalyptic number.

47049851 is a deficient number, since it is larger than the sum of its proper divisors (1).

47049851 is an equidigital number, since it uses as much as digits as its factorization.

47049851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 47049851 is about 6859.2893946822. The cubic root of 47049851 is about 361.0101541280.

The spelling of 47049851 in words is "forty-seven million, forty-nine thousand, eight hundred fifty-one".