201503345 has 16 divisors (see below), whose sum is σ = 252771840. Its totient is φ = 153916224.

The previous prime is 201503243. The next prime is 201503347. The reversal of 201503345 is 543305102.

It is a cyclic number.

It is not a de Polignac number, because 201503345 - 2¹⁶ = 201437809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201503345.

It is not an unprimeable number, because it can be changed into a prime (201503347) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 81467 + ... + 83903.

It is an arithmetic number, because the mean of its divisors is an integer number (15798240).

Almost surely, 2^201503345 is an apocalyptic number.

It is an amenable number.

201503345 is a deficient number, since it is larger than the sum of its proper divisors (51268495).

201503345 is a wasteful number, since it uses less digits than its factorization.

201503345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3184.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 201503345 is about 14195.1873886892. The cubic root of 201503345 is about 586.2651607047.

Adding to 201503345 its reverse (543305102), we get a palindrome (744808447).

The spelling of 201503345 in words is "two hundred one million, five hundred three thousand, three hundred forty-five".