54678645 has 56 divisors (see below), whose sum is σ = 112482816. Its totient is φ = 24984288.

The previous prime is 54678607. The next prime is 54678649. The reversal of 54678645 is 54687645.

It is not a de Polignac number, because 54678645 - 2¹¹ = 54676597 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 54678645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54678649) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 24444 + ... + 26586.

Almost surely, 2^54678645 is an apocalyptic number.

It is an amenable number.

54678645 is an abundant number, since it is smaller than the sum of its proper divisors (57804171).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

54678645 is an equidigital number, since it uses as much as digits as its factorization.

54678645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173 (or 2158 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 54678645 is about 7394.5009973628. The cubic root of 54678645 is about 379.5531335250.

The spelling of 54678645 in words is "fifty-four million, six hundred seventy-eight thousand, six hundred forty-five".