54566820 has 288 divisors, whose sum is σ = 214695936. Its totient is φ = 10886400.

The previous prime is 54566819. The next prime is 54566849. The reversal of 54566820 is 2866545.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 429597 + ... + 429723.

It is an arithmetic number, because the mean of its divisors is an integer number (745472).

Almost surely, 2^54566820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54566820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107347968).

54566820 is an abundant number, since it is smaller than the sum of its proper divisors (160129116).

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

54566820 is a wasteful number, since it uses less digits than its factorization.

54566820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 54566820 is about 7386.9357652548. The cubic root of 54566820 is about 379.2942116231.

The spelling of 54566820 in words is "fifty-four million, five hundred sixty-six thousand, eight hundred twenty".