56478503 has 2 divisors, whose sum is σ = 56478504. Its totient is φ = 56478502.

The previous prime is 56478481. The next prime is 56478523. The reversal of 56478503 is 30587465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56478503 - 2¹⁰ = 56477479 is a prime.

It is a super-2 number, since 2×56478503² = 6379642602242018, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56478523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28239251 + 28239252.

It is an arithmetic number, because the mean of its divisors is an integer number (28239252).

Almost surely, 2^56478503 is an apocalyptic number.

56478503 is a deficient number, since it is larger than the sum of its proper divisors (1).

56478503 is an equidigital number, since it uses as much as digits as its factorization.

56478503 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 38.

The square root of 56478503 is about 7515.2180939744. The cubic root of 56478503 is about 383.6728419182.

The spelling of 56478503 in words is "fifty-six million, four hundred seventy-eight thousand, five hundred three".