55475243 has 2 divisors, whose sum is σ = 55475244. Its totient is φ = 55475242.

The previous prime is 55475239. The next prime is 55475261. The reversal of 55475243 is 34257455.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55475243 - 2² = 55475239 is a prime.

It is not a weakly prime, because it can be changed into another prime (55475843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27737621 + 27737622.

It is an arithmetic number, because the mean of its divisors is an integer number (27737622).

Almost surely, 2^55475243 is an apocalyptic number.

55475243 is a deficient number, since it is larger than the sum of its proper divisors (1).

55475243 is an equidigital number, since it uses as much as digits as its factorization.

55475243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84000, while the sum is 35.

The square root of 55475243 is about 7448.1704464922. The cubic root of 55475243 is about 381.3874556585.

The spelling of 55475243 in words is "fifty-five million, four hundred seventy-five thousand, two hundred forty-three".