54640420 has 12 divisors (see below), whose sum is σ = 114744924. Its totient is φ = 21856160.

The previous prime is 54640381. The next prime is 54640451. The reversal of 54640420 is 2404645.

54640420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22127616 + 32512804 = 4704^2 + 5702^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1365991 + ... + 1366030.

It is an arithmetic number, because the mean of its divisors is an integer number (9562077).

Almost surely, 2^54640420 is an apocalyptic number.

It is an amenable number.

54640420 is an abundant number, since it is smaller than the sum of its proper divisors (60104504).

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

54640420 is a wasteful number, since it uses less digits than its factorization.

54640420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732030 (or 2732028 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 54640420 is about 7391.9158544994. The cubic root of 54640420 is about 379.4646663199.

The spelling of 54640420 in words is "fifty-four million, six hundred forty thousand, four hundred twenty".