200520945 has 48 divisors (see below), whose sum is σ = 361513152. Its totient is φ = 102729600.

The previous prime is 200520913. The next prime is 200520953. The reversal of 200520945 is 549025002.

It is not a de Polignac number, because 200520945 - 2⁵ = 200520913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137470 + ... + 138920.

It is an arithmetic number, because the mean of its divisors is an integer number (7531524).

Almost surely, 2^200520945 is an apocalyptic number.

It is an amenable number.

200520945 is a deficient number, since it is larger than the sum of its proper divisors (160992207).

200520945 is a wasteful number, since it uses less digits than its factorization.

200520945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582 (or 1579 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 200520945 is about 14160.5418328537. The cubic root of 200520945 is about 585.3108582359.

Adding to 200520945 its reverse (549025002), we get a palindrome (749545947).

The spelling of 200520945 in words is "two hundred million, five hundred twenty thousand, nine hundred forty-five".