56487317 has 4 divisors (see below), whose sum is σ = 56586816. Its totient is φ = 56387820.

The previous prime is 56487307. The next prime is 56487329. The reversal of 56487317 is 71378465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71378465 = 5 ⋅14275693.

It is a cyclic number.

It is not a de Polignac number, because 56487317 - 2⁶ = 56487253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56487307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48893 + ... + 50034.

It is an arithmetic number, because the mean of its divisors is an integer number (14146704).

Almost surely, 2^56487317 is an apocalyptic number.

It is an amenable number.

56487317 is a deficient number, since it is larger than the sum of its proper divisors (99499).

56487317 is an equidigital number, since it uses as much as digits as its factorization.

56487317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99498.

The product of its digits is 141120, while the sum is 41.

The square root of 56487317 is about 7515.8044812249. The cubic root of 56487317 is about 383.6927994616.

The spelling of 56487317 in words is "fifty-six million, four hundred eighty-seven thousand, three hundred seventeen".