535631121 has 24 divisors (see below), whose sum is σ = 829090080. Its totient is φ = 332025216.

The previous prime is 535631111. The next prime is 535631141. The reversal of 535631121 is 121136535.

535631121 is a `hidden beast` number, since 5 + 3 + 5 + 631 + 1 + 21 = 666.

It is not a de Polignac number, because 535631121 - 2¹⁰ = 535630097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (535631111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8391 + ... + 33788.

It is an arithmetic number, because the mean of its divisors is an integer number (34545420).

Almost surely, 2^535631121 is an apocalyptic number.

535631121 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

535631121 is a deficient number, since it is larger than the sum of its proper divisors (293458959).

535631121 is a wasteful number, since it uses less digits than its factorization.

535631121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42285 (or 42282 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 535631121 is about 23143.7058614216. The cubic root of 535631121 is about 812.1232315781.

Adding to 535631121 its reverse (121136535), we get a palindrome (656767656).

The spelling of 535631121 in words is "five hundred thirty-five million, six hundred thirty-one thousand, one hundred twenty-one".