543642385 has 32 divisors (see below), whose sum is σ = 777288960. Its totient is φ = 359788800.

The previous prime is 543642361. The next prime is 543642389. The reversal of 543642385 is 583246345.

543642385 = T₄₃₀ + T₄₃₁ + ... + T₁₄₉₄.

It is not a de Polignac number, because 543642385 - 2⁹ = 543641873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (543642389) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45411 + ... + 56119.

It is an arithmetic number, because the mean of its divisors is an integer number (24290280).

Almost surely, 2^543642385 is an apocalyptic number.

543642385 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

543642385 is a deficient number, since it is larger than the sum of its proper divisors (233646575).

543642385 is a wasteful number, since it uses less digits than its factorization.

543642385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10809.

The product of its digits is 345600, while the sum is 40.

The square root of 543642385 is about 23316.1400107308. The cubic root of 543642385 is about 816.1521011363.

The spelling of 543642385 in words is "five hundred forty-three million, six hundred forty-two thousand, three hundred eighty-five".