56478617 has 12 divisors (see below), whose sum is σ = 61531920. Its totient is φ = 51815088.

The previous prime is 56478563. The next prime is 56478629. The reversal of 56478617 is 71687465.

It is not a de Polignac number, because 56478617 - 2⁶ = 56478553 is a prime.

It is a super-3 number, since 3×56478617³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56478637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29318 + ... + 31184.

It is an arithmetic number, because the mean of its divisors is an integer number (5127660).

Almost surely, 2^56478617 is an apocalyptic number.

It is an amenable number.

56478617 is a deficient number, since it is larger than the sum of its proper divisors (5053303).

56478617 is a wasteful number, since it uses less digits than its factorization.

56478617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072 (or 2059 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 56478617 is about 7515.2256785808. The cubic root of 56478617 is about 383.6731000617.

The spelling of 56478617 in words is "fifty-six million, four hundred seventy-eight thousand, six hundred seventeen".