200543540 has 12 divisors (see below), whose sum is σ = 421141476. Its totient is φ = 80217408.

The previous prime is 200543527. The next prime is 200543561. The reversal of 200543540 is 45345002.

200543540 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 52823824 + 147719716 = 7268^2 + 12154^2 .

It is a super-2 number, since 2×200543540² = 80435422871463200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5013569 + ... + 5013608.

It is an arithmetic number, because the mean of its divisors is an integer number (35095123).

Almost surely, 2^200543540 is an apocalyptic number.

200543540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200543540 is an abundant number, since it is smaller than the sum of its proper divisors (220597936).

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

200543540 is a wasteful number, since it uses less digits than its factorization.

200543540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10027186 (or 10027184 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 200543540 is about 14161.3396258970. The cubic root of 200543540 is about 585.3328419778.

Adding to 200543540 its reverse (45345002), we get a palindrome (245888542).

The spelling of 200543540 in words is "two hundred million, five hundred forty-three thousand, five hundred forty".