543955440 has 240 divisors, whose sum is σ = 1992158208. Its totient is φ = 120221184.

The previous prime is 543955439. The next prime is 543955441. The reversal of 543955440 is 44559345.

It is an interprime number because it is at equal distance from previous prime (543955439) and next prime (543955441).

It is a tau number, because it is divible by the number of its divisors (240).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543955441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6553639 + ... + 6553721.

Almost surely, 2^543955440 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 543955440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996079104).

543955440 is an abundant number, since it is smaller than the sum of its proper divisors (1448202768).

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

543955440 is a wasteful number, since it uses less digits than its factorization.

543955440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The square root of 543955440 is about 23322.8523126997. The cubic root of 543955440 is about 816.3087307367.

The spelling of 543955440 in words is "five hundred forty-three million, nine hundred fifty-five thousand, four hundred forty".