54213500 has 48 divisors (see below), whose sum is σ = 129179232. Its totient is φ = 19712000.

The previous prime is 54213491. The next prime is 54213539. The reversal of 54213500 is 531245.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 572 + ... + 10428.

It is an arithmetic number, because the mean of its divisors is an integer number (2691234).

Almost surely, 2^54213500 is an apocalyptic number.

54213500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 54213500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64589616).

54213500 is an abundant number, since it is smaller than the sum of its proper divisors (74965732).

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

54213500 is a wasteful number, since it uses less digits than its factorization.

54213500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9887 (or 9875 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 54213500 is about 7362.9817329666. The cubic root of 54213500 is about 378.4737953655.

Adding to 54213500 its reverse (531245), we get a palindrome (54744745).

The spelling of 54213500 in words is "fifty-four million, two hundred thirteen thousand, five hundred".