54321660 has 72 divisors (see below), whose sum is σ = 168307776. Its totient is φ = 14175360.

The previous prime is 54321643. The next prime is 54321677. The reversal of 54321660 is 6612345.

It is an interprime number because it is at equal distance from previous prime (54321643) and next prime (54321677).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5250 + ... + 11670.

It is an arithmetic number, because the mean of its divisors is an integer number (2337608).

Almost surely, 2^54321660 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 54321660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84153888).

54321660 is an abundant number, since it is smaller than the sum of its proper divisors (113986116).

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

54321660 is a wasteful number, since it uses less digits than its factorization.

54321660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6483 (or 6478 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 54321660 is about 7370.3229237259. The cubic root of 54321660 is about 378.7253227068.

The spelling of 54321660 in words is "fifty-four million, three hundred twenty-one thousand, six hundred sixty".