200531545 has 4 divisors (see below), whose sum is σ = 240637860. Its totient is φ = 160425232.

The previous prime is 200531537. The next prime is 200531579. The reversal of 200531545 is 545135002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34327881 + 166203664 = 5859^2 + 12892^2 .

It is a cyclic number.

It is not a de Polignac number, because 200531545 - 2³ = 200531537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20053150 + ... + 20053159.

It is an arithmetic number, because the mean of its divisors is an integer number (60159465).

Almost surely, 2^200531545 is an apocalyptic number.

It is an amenable number.

200531545 is a deficient number, since it is larger than the sum of its proper divisors (40106315).

200531545 is an equidigital number, since it uses as much as digits as its factorization.

200531545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40106314.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 200531545 is about 14160.9161073710. The cubic root of 200531545 is about 585.3211716818.

Adding to 200531545 its reverse (545135002), we get a palindrome (745666547).

The spelling of 200531545 in words is "two hundred million, five hundred thirty-one thousand, five hundred forty-five".