54455540 has 24 divisors (see below), whose sum is σ = 115645320. Its totient is φ = 21536768.

The previous prime is 54455507. The next prime is 54455543. The reversal of 54455540 is 4555445.

It can be written as a sum of positive squares in 4 ways, for example, as 3247204 + 51208336 = 1802^2 + 7156^2 .

It is a junction number, because it is equal to n+sod(n) for n = 54455497 and 54455506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54455543) 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 7 ways as a sum of consecutive naturals, for example, 13517 + ... + 17076.

It is an arithmetic number, because the mean of its divisors is an integer number (4818555).

Almost surely, 2^54455540 is an apocalyptic number.

It is an amenable number.

54455540 is an abundant number, since it is smaller than the sum of its proper divisors (61189780).

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

54455540 is a wasteful number, since it uses less digits than its factorization.

54455540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30691 (or 30689 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 32.

The square root of 54455540 is about 7379.3997045830. The cubic root of 54455540 is about 379.0362002259.

The spelling of 54455540 in words is "fifty-four million, four hundred fifty-five thousand, five hundred forty".