54451820 has 12 divisors (see below), whose sum is σ = 114348864. Its totient is φ = 21780720.

The previous prime is 54451811. The next prime is 54451843. The reversal of 54451820 is 2815445.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1361276 + ... + 1361315.

It is an arithmetic number, because the mean of its divisors is an integer number (9529072).

Almost surely, 2^54451820 is an apocalyptic number.

It is an amenable number.

54451820 is an abundant number, since it is smaller than the sum of its proper divisors (59897044).

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

54451820 is a wasteful number, since it uses less digits than its factorization.

54451820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2722600 (or 2722598 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 54451820 is about 7379.1476472557. The cubic root of 54451820 is about 379.0275690455.

The spelling of 54451820 in words is "fifty-four million, four hundred fifty-one thousand, eight hundred twenty".