200540945 has 16 divisors (see below), whose sum is σ = 271581120. Its totient is φ = 140817600.

The previous prime is 200540939. The next prime is 200540971. The reversal of 200540945 is 549045002.

It is a happy number.

It is not a de Polignac number, because 200540945 - 2¹⁴ = 200524561 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61271 + ... + 64460.

It is an arithmetic number, because the mean of its divisors is an integer number (16973820).

Almost surely, 2^200540945 is an apocalyptic number.

It is an amenable number.

200540945 is a deficient number, since it is larger than the sum of its proper divisors (71040175).

200540945 is a wasteful number, since it uses less digits than its factorization.

200540945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125776.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 200540945 is about 14161.2480029127. The cubic root of 200540945 is about 585.3303172638.

Adding to 200540945 its reverse (549045002), we get a palindrome (749585947).

It can be divided in two parts, 200 and 540945, that added together give a palindrome (541145).

The spelling of 200540945 in words is "two hundred million, five hundred forty thousand, nine hundred forty-five".