55588517 has 2 divisors, whose sum is σ = 55588518. Its totient is φ = 55588516.

The previous prime is 55588501. The next prime is 55588523. The reversal of 55588517 is 71588555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33016516 + 22572001 = 5746^2 + 4751^2 .

It is a cyclic number.

It is not a de Polignac number, because 55588517 - 2⁴ = 55588501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55588567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27794258 + 27794259.

It is an arithmetic number, because the mean of its divisors is an integer number (27794259).

Almost surely, 2^55588517 is an apocalyptic number.

It is an amenable number.

55588517 is a deficient number, since it is larger than the sum of its proper divisors (1).

55588517 is an equidigital number, since it uses as much as digits as its factorization.

55588517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 280000, while the sum is 44.

The square root of 55588517 is about 7455.7707180412. The cubic root of 55588517 is about 381.6468621350.

The spelling of 55588517 in words is "fifty-five million, five hundred eighty-eight thousand, five hundred seventeen".