55247617 has 2 divisors, whose sum is σ = 55247618. Its totient is φ = 55247616.

The previous prime is 55247593. The next prime is 55247627. The reversal of 55247617 is 71674255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47761921 + 7485696 = 6911^2 + 2736^2 .

It is a cyclic number.

It is not a de Polignac number, because 55247617 - 2¹⁹ = 54723329 is a prime.

It is not a weakly prime, because it can be changed into another prime (55247627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27623808 + 27623809.

It is an arithmetic number, because the mean of its divisors is an integer number (27623809).

Almost surely, 2^55247617 is an apocalyptic number.

It is an amenable number.

55247617 is a deficient number, since it is larger than the sum of its proper divisors (1).

55247617 is an equidigital number, since it uses as much as digits as its factorization.

55247617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 37.

The square root of 55247617 is about 7432.8740740039. The cubic root of 55247617 is about 380.8651042715.

The spelling of 55247617 in words is "fifty-five million, two hundred forty-seven thousand, six hundred seventeen".