56478045 has 32 divisors (see below), whose sum is σ = 98985600. Its totient is φ = 27327744.

The previous prime is 56478011. The next prime is 56478047. The reversal of 56478045 is 54087465.

It is not a de Polignac number, because 56478045 - 2¹⁷ = 56346973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 56477994 and 56478012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56478047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9051 + ... + 13959.

It is an arithmetic number, because the mean of its divisors is an integer number (3093300).

Almost surely, 2^56478045 is an apocalyptic number.

It is an amenable number.

56478045 is a deficient number, since it is larger than the sum of its proper divisors (42507555).

56478045 is a wasteful number, since it uses less digits than its factorization.

56478045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4989.

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 56478045 is about 7515.1876224084. The cubic root of 56478045 is about 383.6718048119.

The spelling of 56478045 in words is "fifty-six million, four hundred seventy-eight thousand, forty-five".