543640450 has 24 divisors (see below), whose sum is σ = 1070653572. Its totient is φ = 204664320.

The previous prime is 543640429. The next prime is 543640457. The reversal of 543640450 is 54046345.

It can be written as a sum of positive squares in 6 ways, for example, as 117094041 + 426546409 = 10821^2 + 20653^2 .

It is not an unprimeable number, because it can be changed into a prime (543640457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318939 + ... + 320638.

Almost surely, 2^543640450 is an apocalyptic number.

543640450 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

543640450 is a deficient number, since it is larger than the sum of its proper divisors (527013122).

543640450 is a wasteful number, since it uses less digits than its factorization.

543640450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639606 (or 639601 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The square root of 543640450 is about 23316.0985158324. The cubic root of 543640450 is about 816.1511328182.

Adding to 543640450 its reverse (54046345), we get a palindrome (597686795).

The spelling of 543640450 in words is "five hundred forty-three million, six hundred forty thousand, four hundred fifty".