55606217 has 16 divisors (see below), whose sum is σ = 60668160. Its totient is φ = 50792832.

The previous prime is 55606211. The next prime is 55606223. The reversal of 55606217 is 71260655.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55606211) and next prime (55606223).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55606217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55606211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64763 + ... + 65615.

It is an arithmetic number, because the mean of its divisors is an integer number (3791760).

Almost surely, 2^55606217 is an apocalyptic number.

It is an amenable number.

55606217 is a deficient number, since it is larger than the sum of its proper divisors (5061943).

55606217 is a wasteful number, since it uses less digits than its factorization.

55606217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 55606217 is about 7456.9576235889. The cubic root of 55606217 is about 381.6873647003.

The spelling of 55606217 in words is "fifty-five million, six hundred six thousand, two hundred seventeen".