55608617 has 2 divisors, whose sum is σ = 55608618. Its totient is φ = 55608616.

The previous prime is 55608599. The next prime is 55608629. The reversal of 55608617 is 71680655.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33131536 + 22477081 = 5756^2 + 4741^2 .

It is a cyclic number.

It is not a de Polignac number, because 55608617 - 2²⁰ = 54560041 is a prime.

It is a super-3 number, since 3×55608617³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (55608667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27804308 + 27804309.

It is an arithmetic number, because the mean of its divisors is an integer number (27804309).

Almost surely, 2^55608617 is an apocalyptic number.

It is an amenable number.

55608617 is a deficient number, since it is larger than the sum of its proper divisors (1).

55608617 is an equidigital number, since it uses as much as digits as its factorization.

55608617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 55608617 is about 7457.1185453900. The cubic root of 55608617 is about 381.6928559118.

The spelling of 55608617 in words is "fifty-five million, six hundred eight thousand, six hundred seventeen".