55575617 has 2 divisors, whose sum is σ = 55575618. Its totient is φ = 55575616.

The previous prime is 55575599. The next prime is 55575643. The reversal of 55575617 is 71657555.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53129521 + 2446096 = 7289^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 55575617 - 2¹⁴ = 55559233 is a prime.

It is not a weakly prime, because it can be changed into another prime (55575917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27787808 + 27787809.

It is an arithmetic number, because the mean of its divisors is an integer number (27787809).

Almost surely, 2^55575617 is an apocalyptic number.

It is an amenable number.

55575617 is a deficient number, since it is larger than the sum of its proper divisors (1).

55575617 is an equidigital number, since it uses as much as digits as its factorization.

55575617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183750, while the sum is 41.

The square root of 55575617 is about 7454.9055661356. The cubic root of 55575617 is about 381.6173378995.

The spelling of 55575617 in words is "fifty-five million, five hundred seventy-five thousand, six hundred seventeen".