54100121 has 4 divisors (see below), whose sum is σ = 55120932. Its totient is φ = 53079312.

The previous prime is 54100099. The next prime is 54100133. The reversal of 54100121 is 12100145.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38576521 + 15523600 = 6211^2 + 3940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54100121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54100096 and 54100105.

It is not an unprimeable number, because it can be changed into a prime (54100141) 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 3 ways as a sum of consecutive naturals, for example, 510326 + ... + 510431.

It is an arithmetic number, because the mean of its divisors is an integer number (13780233).

Almost surely, 2^54100121 is an apocalyptic number.

It is an amenable number.

54100121 is a deficient number, since it is larger than the sum of its proper divisors (1020811).

54100121 is a wasteful number, since it uses less digits than its factorization.

54100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020810.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 54100121 is about 7355.2784447633. The cubic root of 54100121 is about 378.2097717729.

Adding to 54100121 its reverse (12100145), we get a palindrome (66200266).

The spelling of 54100121 in words is "fifty-four million, one hundred thousand, one hundred twenty-one".