55065617 has 4 divisors (see below), whose sum is σ = 55213620. Its totient is φ = 54917616.

The previous prime is 55065587. The next prime is 55065631. The reversal of 55065617 is 71656055.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15928081 + 39137536 = 3991^2 + 6256^2 .

It is a cyclic number.

It is not a de Polignac number, because 55065617 - 2¹⁰ = 55064593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55065677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73442 + ... + 74187.

It is an arithmetic number, because the mean of its divisors is an integer number (13803405).

Almost surely, 2^55065617 is an apocalyptic number.

It is an amenable number.

55065617 is a deficient number, since it is larger than the sum of its proper divisors (148003).

55065617 is a wasteful number, since it uses less digits than its factorization.

55065617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148002.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 55065617 is about 7420.6210656521. The cubic root of 55065617 is about 380.4464213254.

The spelling of 55065617 in words is "fifty-five million, sixty-five thousand, six hundred seventeen".