54808121 has 2 divisors, whose sum is σ = 54808122. Its totient is φ = 54808120.

The previous prime is 54808111. The next prime is 54808123. The reversal of 54808121 is 12180845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35271721 + 19536400 = 5939^2 + 4420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54808121 is a prime.

Together with 54808123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54808123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27404060 + 27404061.

It is an arithmetic number, because the mean of its divisors is an integer number (27404061).

Almost surely, 2^54808121 is an apocalyptic number.

It is an amenable number.

54808121 is a deficient number, since it is larger than the sum of its proper divisors (1).

54808121 is an equidigital number, since it uses as much as digits as its factorization.

54808121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 54808121 is about 7403.2507049269. The cubic root of 54808121 is about 379.8524842932.

Adding to 54808121 its reverse (12180845), we get a palindrome (66988966).

The spelling of 54808121 in words is "fifty-four million, eight hundred eight thousand, one hundred twenty-one".