200540520 has 48 divisors (see below), whose sum is σ = 651757860. Its totient is φ = 53477376.

The previous prime is 200540503. The next prime is 200540531. The reversal of 200540520 is 25045002.

It can be written as a sum of positive squares in 2 ways, for example, as 165328164 + 35212356 = 12858^2 + 5934^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 200540493 and 200540502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 278169 + ... + 278888.

Almost surely, 2^200540520 is an apocalyptic number.

200540520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200540520 is an abundant number, since it is smaller than the sum of its proper divisors (451217340).

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

200540520 is a wasteful number, since it uses less digits than its factorization.

200540520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557074 (or 557067 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 200540520 is about 14161.2329971652. The cubic root of 200540520 is about 585.3299037729.

Adding to 200540520 its reverse (25045002), we get a palindrome (225585522).

The spelling of 200540520 in words is "two hundred million, five hundred forty thousand, five hundred twenty".