56447147 has 2 divisors, whose sum is σ = 56447148. Its totient is φ = 56447146.

The previous prime is 56447117. The next prime is 56447189. The reversal of 56447147 is 74174465.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56447147 - 2¹⁰ = 56446123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56447147.

It is not a weakly prime, because it can be changed into another prime (56447107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28223573 + 28223574.

It is an arithmetic number, because the mean of its divisors is an integer number (28223574).

Almost surely, 2^56447147 is an apocalyptic number.

56447147 is a deficient number, since it is larger than the sum of its proper divisors (1).

56447147 is an equidigital number, since it uses as much as digits as its factorization.

56447147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 38.

The square root of 56447147 is about 7513.1316373401. The cubic root of 56447147 is about 383.6018256787.

The spelling of 56447147 in words is "fifty-six million, four hundred forty-seven thousand, one hundred forty-seven".