54345121 has 4 divisors (see below), whose sum is σ = 54390292. Its totient is φ = 54299952.

The previous prime is 54345103. The next prime is 54345167. The reversal of 54345121 is 12154345.

It is a happy number.

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 18584721 + 35760400 = 4311^2 + 5980^2 .

It is a cyclic number.

It is not a de Polignac number, because 54345121 - 2⁵ = 54345089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54345191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20730 + ... + 23203.

It is an arithmetic number, because the mean of its divisors is an integer number (13597573).

Almost surely, 2^54345121 is an apocalyptic number.

It is an amenable number.

54345121 is a deficient number, since it is larger than the sum of its proper divisors (45171).

54345121 is a wasteful number, since it uses less digits than its factorization.

54345121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45170.

The product of its digits is 2400, while the sum is 25.

The square root of 54345121 is about 7371.9143375381. The cubic root of 54345121 is about 378.7798374617.

Adding to 54345121 its reverse (12154345), we get a palindrome (66499466).

The spelling of 54345121 in words is "fifty-four million, three hundred forty-five thousand, one hundred twenty-one".