201501693 has 6 divisors (see below), whose sum is σ = 291058014. Its totient is φ = 134334456.

The previous prime is 201501683. The next prime is 201501701. The reversal of 201501693 is 396105102.

It can be written as a sum of positive squares in only one way, i.e., 199996164 + 1505529 = 14142^2 + 1227^2 .

It is not a de Polignac number, because 201501693 - 2¹⁰ = 201500669 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201501613) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11194530 + ... + 11194547.

It is an arithmetic number, because the mean of its divisors is an integer number (48509669).

Almost surely, 2^201501693 is an apocalyptic number.

It is an amenable number.

201501693 is a deficient number, since it is larger than the sum of its proper divisors (89556321).

201501693 is a wasteful number, since it uses less digits than its factorization.

201501693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22389083 (or 22389080 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 201501693 is about 14195.1291998347. The cubic root of 201501693 is about 586.2635585597.

Adding to 201501693 its reverse (396105102), we get a palindrome (597606795).

The spelling of 201501693 in words is "two hundred one million, five hundred one thousand, six hundred ninety-three".