54131121 has 24 divisors (see below), whose sum is σ = 89009856. Its totient is φ = 31379040.

The previous prime is 54131113. The next prime is 54131123. The reversal of 54131121 is 12113145.

54131121 is a `hidden beast` number, since 541 + 3 + 1 + 121 = 666.

It is not a de Polignac number, because 54131121 - 2³ = 54131113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54131094 and 54131103.

It is not an unprimeable number, because it can be changed into a prime (54131123) 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, 9610 + ... + 14163.

It is an arithmetic number, because the mean of its divisors is an integer number (3708744).

Almost surely, 2^54131121 is an apocalyptic number.

It is an amenable number.

54131121 is a deficient number, since it is larger than the sum of its proper divisors (34878735).

54131121 is a wasteful number, since it uses less digits than its factorization.

54131121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23813 (or 23810 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 54131121 is about 7357.3854731148. The cubic root of 54131121 is about 378.2819975153.

Adding to 54131121 its reverse (12113145), we get a palindrome (66244266).

The spelling of 54131121 in words is "fifty-four million, one hundred thirty-one thousand, one hundred twenty-one".