55564517 has 8 divisors (see below), whose sum is σ = 58988376. Its totient is φ = 52157952.

The previous prime is 55564513. The next prime is 55564519. The reversal of 55564517 is 71546555.

It can be written as a sum of positive squares in 4 ways, for example, as 11062276 + 44502241 = 3326^2 + 6671^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55564517 - 2² = 55564513 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55564513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2633 + ... + 10865.

It is an arithmetic number, because the mean of its divisors is an integer number (7373547).

Almost surely, 2^55564517 is an apocalyptic number.

It is an amenable number.

55564517 is a deficient number, since it is larger than the sum of its proper divisors (3423859).

55564517 is a wasteful number, since it uses less digits than its factorization.

55564517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8647.

The product of its digits is 105000, while the sum is 38.

The square root of 55564517 is about 7454.1610527275. The cubic root of 55564517 is about 381.5919296676.

The spelling of 55564517 in words is "fifty-five million, five hundred sixty-four thousand, five hundred seventeen".