54558820 has 12 divisors (see below), whose sum is σ = 114573564. Its totient is φ = 21823520.

The previous prime is 54558817. The next prime is 54558841. The reversal of 54558820 is 2885545.

It can be written as a sum of positive squares in 2 ways, for example, as 33269824 + 21288996 = 5768^2 + 4614^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 54558820.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1363951 + ... + 1363990.

It is an arithmetic number, because the mean of its divisors is an integer number (9547797).

Almost surely, 2^54558820 is an apocalyptic number.

It is an amenable number.

54558820 is an abundant number, since it is smaller than the sum of its proper divisors (60014744).

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

54558820 is a wasteful number, since it uses less digits than its factorization.

54558820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727950 (or 2727948 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 37.

The square root of 54558820 is about 7386.3942488876. The cubic root of 54558820 is about 379.2756747052.

The spelling of 54558820 in words is "fifty-four million, five hundred fifty-eight thousand, eight hundred twenty".