47566819 has 2 divisors, whose sum is σ = 47566820. Its totient is φ = 47566818.

The previous prime is 47566817. The next prime is 47566843. The reversal of 47566819 is 91866574.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47566819 - 2¹ = 47566817 is a prime.

It is a super-2 number, since 2×47566819² = 4525204539557522, which contains 22 as substring.

Together with 47566817, 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 (47566817) 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, 23783409 + 23783410.

It is an arithmetic number, because the mean of its divisors is an integer number (23783410).

Almost surely, 2^47566819 is an apocalyptic number.

47566819 is a deficient number, since it is larger than the sum of its proper divisors (1).

47566819 is an equidigital number, since it uses as much as digits as its factorization.

47566819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 47566819 is about 6896.8702322140. The cubic root of 47566819 is about 362.3275603148.

The spelling of 47566819 in words is "forty-seven million, five hundred sixty-six thousand, eight hundred nineteen".