55541207 has 2 divisors, whose sum is σ = 55541208. Its totient is φ = 55541206.

The previous prime is 55541201. The next prime is 55541209. The reversal of 55541207 is 70214555.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55541207 - 2²² = 51346903 is a prime.

Together with 55541209, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55541207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55541201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27770603 + 27770604.

It is an arithmetic number, because the mean of its divisors is an integer number (27770604).

Almost surely, 2^55541207 is an apocalyptic number.

55541207 is a deficient number, since it is larger than the sum of its proper divisors (1).

55541207 is an equidigital number, since it uses as much as digits as its factorization.

55541207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 55541207 is about 7452.5973324741. The cubic root of 55541207 is about 381.5385613641.

The spelling of 55541207 in words is "fifty-five million, five hundred forty-one thousand, two hundred seven".