56555503 has 2 divisors, whose sum is σ = 56555504. Its totient is φ = 56555502.

The previous prime is 56555491. The next prime is 56555507. The reversal of 56555503 is 30555565.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56555503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56555507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28277751 + 28277752.

It is an arithmetic number, because the mean of its divisors is an integer number (28277752).

Almost surely, 2^56555503 is an apocalyptic number.

56555503 is a deficient number, since it is larger than the sum of its proper divisors (1).

56555503 is an equidigital number, since it uses as much as digits as its factorization.

56555503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56250, while the sum is 34.

The square root of 56555503 is about 7520.3392875588. The cubic root of 56555503 is about 383.8471229377.

The spelling of 56555503 in words is "fifty-six million, five hundred fifty-five thousand, five hundred three".