54861321 has 16 divisors (see below), whose sum is σ = 75273408. Its totient is φ = 35520000.

The previous prime is 54861319. The next prime is 54861347. The reversal of 54861321 is 12316845.

It is not a de Polignac number, because 54861321 - 2¹ = 54861319 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54860321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29985 + ... + 31761.

It is an arithmetic number, because the mean of its divisors is an integer number (4704588).

Almost surely, 2^54861321 is an apocalyptic number.

It is an amenable number.

54861321 is a deficient number, since it is larger than the sum of its proper divisors (20412087).

54861321 is a wasteful number, since it uses less digits than its factorization.

54861321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072.

The product of its digits is 5760, while the sum is 30.

The square root of 54861321 is about 7406.8428496897. The cubic root of 54861321 is about 379.9753469694.

The spelling of 54861321 in words is "fifty-four million, eight hundred sixty-one thousand, three hundred twenty-one".