55257347 has 2 divisors, whose sum is σ = 55257348. Its totient is φ = 55257346.

The previous prime is 55257343. The next prime is 55257353. The reversal of 55257347 is 74375255.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55257347 - 2² = 55257343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55257347.

It is not a weakly prime, because it can be changed into another prime (55257343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27628673 + 27628674.

It is an arithmetic number, because the mean of its divisors is an integer number (27628674).

Almost surely, 2^55257347 is an apocalyptic number.

55257347 is a deficient number, since it is larger than the sum of its proper divisors (1).

55257347 is an equidigital number, since it uses as much as digits as its factorization.

55257347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147000, while the sum is 38.

The square root of 55257347 is about 7433.5285699323. The cubic root of 55257347 is about 380.8874617965.

The spelling of 55257347 in words is "fifty-five million, two hundred fifty-seven thousand, three hundred forty-seven".