54540216 has 80 divisors (see below), whose sum is σ = 161781840. Its totient is φ = 17107200.

The previous prime is 54540197. The next prime is 54540217. The reversal of 54540216 is 61204545.

It is a super-2 number, since 2×54540216² = 5949270322653312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 54540216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54540217) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8541 + ... + 13491.

It is an arithmetic number, because the mean of its divisors is an integer number (2022273).

Almost surely, 2^54540216 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 54540216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80890920).

54540216 is an abundant number, since it is smaller than the sum of its proper divisors (107241624).

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

54540216 is a wasteful number, since it uses less digits than its factorization.

54540216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4986 (or 4973 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 54540216 is about 7385.1347990406. The cubic root of 54540216 is about 379.2325600947.

It can be divided in two parts, 54540 and 216, that added together give a square (54756 = 234²).

The spelling of 54540216 in words is "fifty-four million, five hundred forty thousand, two hundred sixteen".