56478673 has 2 divisors, whose sum is σ = 56478674. Its totient is φ = 56478672.

The previous prime is 56478649. The next prime is 56478679. The reversal of 56478673 is 37687465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54582544 + 1896129 = 7388^2 + 1377^2 .

It is a cyclic number.

It is not a de Polignac number, because 56478673 - 2¹⁷ = 56347601 is a prime.

It is not a weakly prime, because it can be changed into another prime (56478679) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28239336 + 28239337.

It is an arithmetic number, because the mean of its divisors is an integer number (28239337).

Almost surely, 2^56478673 is an apocalyptic number.

It is an amenable number.

56478673 is a deficient number, since it is larger than the sum of its proper divisors (1).

56478673 is an equidigital number, since it uses as much as digits as its factorization.

56478673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 56478673 is about 7515.2294043495. The cubic root of 56478673 is about 383.6732268689.

The spelling of 56478673 in words is "fifty-six million, four hundred seventy-eight thousand, six hundred seventy-three".