54121 has 2 divisors, whose sum is σ = 54122. Its totient is φ = 54120.

The previous prime is 54101. The next prime is 54133. The reversal of 54121 is 12145.

54121 = 164² + 165².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27225 + 26896 = 165^2 + 164^2 .

It is a cyclic number.

It is not a de Polignac number, because 54121 - 2⁷ = 53993 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27060 + 27061.

It is an arithmetic number, because the mean of its divisors is an integer number (27061).

2⁵⁴¹²¹ is an apocalyptic number.

54121 is the 165-th centered square number.

It is an amenable number.

54121 is a deficient number, since it is larger than the sum of its proper divisors (1).

54121 is an equidigital number, since it uses as much as digits as its factorization.

54121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40, while the sum is 13.

The square root of 54121 is about 232.6392056383. The cubic root of 54121 is about 37.8258420008.

Adding to 54121 its reverse (12145), we get a palindrome (66266).

The spelling of 54121 in words is "fifty-four thousand, one hundred twenty-one".