54543412 has 72 divisors (see below), whose sum is σ = 127092672. Its totient is φ = 19979520.

The previous prime is 54543409. The next prime is 54543421. The reversal of 54543412 is 21434545.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an alternating number because its digits alternate between odd and even.

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, 57123 + ... + 58069.

It is an arithmetic number, because the mean of its divisors is an integer number (1765176).

Almost surely, 2^54543412 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 54543412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63546336).

54543412 is an abundant number, since it is smaller than the sum of its proper divisors (72549260).

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

54543412 is a wasteful number, since it uses less digits than its factorization.

54543412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997 (or 984 counting only the distinct ones).

The product of its digits is 9600, while the sum is 28.

The square root of 54543412 is about 7385.3511764844. The cubic root of 54543412 is about 379.2399674947.

Adding to 54543412 its reverse (21434545), we get a palindrome (75977957).

The spelling of 54543412 in words is "fifty-four million, five hundred forty-three thousand, four hundred twelve".