54678440 has 32 divisors (see below), whose sum is σ = 124125480. Its totient is φ = 21676032.

The previous prime is 54678439. The next prime is 54678467. The reversal of 54678440 is 4487645.

It can be written as a sum of positive squares in 4 ways, for example, as 11303044 + 43375396 = 3362^2 + 6586^2 .

It is a junction number, because it is equal to n+sod(n) for n = 54678394 and 54678403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 10568.

Almost surely, 2^54678440 is an apocalyptic number.

It is an amenable number.

54678440 is an abundant number, since it is smaller than the sum of its proper divisors (69447040).

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

54678440 is a wasteful number, since it uses less digits than its factorization.

54678440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12221 (or 12217 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 54678440 is about 7394.4871356978. The cubic root of 54678440 is about 379.5526591869.

The spelling of 54678440 in words is "fifty-four million, six hundred seventy-eight thousand, four hundred forty".