54812820 has 48 divisors (see below), whose sum is σ = 153820800. Its totient is φ = 14583936.

The previous prime is 54812761. The next prime is 54812827. The reversal of 54812820 is 2821845.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54812827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38481 + ... + 39879.

It is an arithmetic number, because the mean of its divisors is an integer number (3204600).

Almost surely, 2^54812820 is an apocalyptic number.

It is an amenable number.

54812820 is an abundant number, since it is smaller than the sum of its proper divisors (99007980).

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

54812820 is a wasteful number, since it uses less digits than its factorization.

54812820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 54812820 is about 7403.5680587133. The cubic root of 54812820 is about 379.8633395933.

The spelling of 54812820 in words is "fifty-four million, eight hundred twelve thousand, eight hundred twenty".