543630506 has 4 divisors (see below), whose sum is σ = 815445762. Its totient is φ = 271815252.

The previous prime is 543630473. The next prime is 543630509. The reversal of 543630506 is 605036345.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 458345281 + 85285225 = 21409^2 + 9235^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (543630509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135907625 + ... + 135907628.

Almost surely, 2^543630506 is an apocalyptic number.

543630506 is a deficient number, since it is larger than the sum of its proper divisors (271815256).

543630506 is a wasteful number, since it uses less digits than its factorization.

543630506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271815255.

The product of its (nonzero) digits is 32400, while the sum is 32.

The square root of 543630506 is about 23315.8852716340. The cubic root of 543630506 is about 816.1461565781.

The spelling of 543630506 in words is "five hundred forty-three million, six hundred thirty thousand, five hundred six".