56555393 has 2 divisors, whose sum is σ = 56555394. Its totient is φ = 56555392.

The previous prime is 56555341. The next prime is 56555407. The reversal of 56555393 is 39355565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56445169 + 110224 = 7513^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 56555393 - 2⁶ = 56555329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 56555393.

It is not a weakly prime, because it can be changed into another prime (56555333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28277696 + 28277697.

It is an arithmetic number, because the mean of its divisors is an integer number (28277697).

Almost surely, 2^56555393 is an apocalyptic number.

It is an amenable number.

56555393 is a deficient number, since it is larger than the sum of its proper divisors (1).

56555393 is an equidigital number, since it uses as much as digits as its factorization.

56555393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 303750, while the sum is 41.

The square root of 56555393 is about 7520.3319740554. The cubic root of 56555393 is about 383.8468740777.

The spelling of 56555393 in words is "fifty-six million, five hundred fifty-five thousand, three hundred ninety-three".