543156840 has 80 divisors (see below), whose sum is σ = 1825621380. Its totient is φ = 144840960.

The previous prime is 543156829. The next prime is 543156841. The reversal of 543156840 is 48651345.

It is a happy number.

543156840 is a `hidden beast` number, since 54 + 3 + 1 + 568 + 40 = 666.

543156840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 521756964 + 21399876 = 22842^2 + 4626^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 543156795 and 543156804.

It is not an unprimeable number, because it can be changed into a prime (543156841) 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, 80581 + ... + 87060.

Almost surely, 2^543156840 is an apocalyptic number.

It is an amenable number.

543156840 is an abundant number, since it is smaller than the sum of its proper divisors (1282464540).

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

543156840 is a wasteful number, since it uses less digits than its factorization.

543156840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167664 (or 167651 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 543156840 is about 23305.7254768008. The cubic root of 543156840 is about 815.9090512822.

The spelling of 543156840 in words is "five hundred forty-three million, one hundred fifty-six thousand, eight hundred forty".