55545071 has 2 divisors, whose sum is σ = 55545072. Its totient is φ = 55545070.

The previous prime is 55545067. The next prime is 55545089. The reversal of 55545071 is 17054555.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55545071 - 2² = 55545067 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55545031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27772535 + 27772536.

It is an arithmetic number, because the mean of its divisors is an integer number (27772536).

Almost surely, 2^55545071 is an apocalyptic number.

55545071 is a deficient number, since it is larger than the sum of its proper divisors (1).

55545071 is an equidigital number, since it uses as much as digits as its factorization.

55545071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17500, while the sum is 32.

The square root of 55545071 is about 7452.8565664448. The cubic root of 55545071 is about 381.5474090341.

The spelling of 55545071 in words is "fifty-five million, five hundred forty-five thousand, seventy-one".