55121267 has 2 divisors, whose sum is σ = 55121268. Its totient is φ = 55121266.

The previous prime is 55121251. The next prime is 55121273. The reversal of 55121267 is 76212155.

55121267 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55121267 - 2⁴ = 55121251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55121207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27560633 + 27560634.

It is an arithmetic number, because the mean of its divisors is an integer number (27560634).

Almost surely, 2^55121267 is an apocalyptic number.

55121267 is a deficient number, since it is larger than the sum of its proper divisors (1).

55121267 is an equidigital number, since it uses as much as digits as its factorization.

55121267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4200, while the sum is 29.

The square root of 55121267 is about 7424.3698049060. The cubic root of 55121267 is about 380.5745394768.

The spelling of 55121267 in words is "fifty-five million, one hundred twenty-one thousand, two hundred sixty-seven".