56056447 has 2 divisors, whose sum is σ = 56056448. Its totient is φ = 56056446.

The previous prime is 56056439. The next prime is 56056453. The reversal of 56056447 is 74465065.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56056447 - 2³ = 56056439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56053447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28028223 + 28028224.

It is an arithmetic number, because the mean of its divisors is an integer number (28028224).

Almost surely, 2^56056447 is an apocalyptic number.

56056447 is a deficient number, since it is larger than the sum of its proper divisors (1).

56056447 is an equidigital number, since it uses as much as digits as its factorization.

56056447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 56056447 is about 7487.0853474500. The cubic root of 56056447 is about 382.7147400859.

The spelling of 56056447 in words is "fifty-six million, fifty-six thousand, four hundred forty-seven".