54491820 has 24 divisors (see below), whose sum is σ = 152577264. Its totient is φ = 14531136.

The previous prime is 54491803. The next prime is 54491821. The reversal of 54491820 is 2819445.

It is not an unprimeable number, because it can be changed into a prime (54491821) 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, 454039 + ... + 454158.

It is an arithmetic number, because the mean of its divisors is an integer number (6357386).

Almost surely, 2^54491820 is an apocalyptic number.

It is an amenable number.

54491820 is an abundant number, since it is smaller than the sum of its proper divisors (98085444).

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

54491820 is a wasteful number, since it uses less digits than its factorization.

54491820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908209 (or 908207 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 54491820 is about 7381.8574898192. The cubic root of 54491820 is about 379.1203568339.

The spelling of 54491820 in words is "fifty-four million, four hundred ninety-one thousand, eight hundred twenty".