201504545 has 32 divisors (see below), whose sum is σ = 272208384. Its totient is φ = 141926400.

The previous prime is 201504539. The next prime is 201504559. The reversal of 201504545 is 545405102.

It is not a de Polignac number, because 201504545 - 2¹² = 201500449 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434984 + ... + 435446.

It is an arithmetic number, because the mean of its divisors is an integer number (8506512).

Almost surely, 2^201504545 is an apocalyptic number.

It is an amenable number.

201504545 is a deficient number, since it is larger than the sum of its proper divisors (70703839).

201504545 is a wasteful number, since it uses less digits than its factorization.

201504545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 201504545 is about 14195.2296564726. The cubic root of 201504545 is about 586.2663244849.

Adding to 201504545 its reverse (545405102), we get a palindrome (746909647).

The spelling of 201504545 in words is "two hundred one million, five hundred four thousand, five hundred forty-five".