55216599 has 8 divisors (see below), whose sum is σ = 74351472. Its totient is φ = 36446400.

The previous prime is 55216597. The next prime is 55216633. The reversal of 55216599 is 99561255.

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

It is not a de Polignac number, because 55216599 - 2¹ = 55216597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55216599.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55216591) 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, 90814 + ... + 91419.

It is an arithmetic number, because the mean of its divisors is an integer number (9293934).

Almost surely, 2^55216599 is an apocalyptic number.

55216599 is a deficient number, since it is larger than the sum of its proper divisors (19134873).

55216599 is a wasteful number, since it uses less digits than its factorization.

55216599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182337.

The product of its digits is 121500, while the sum is 42.

The square root of 55216599 is about 7430.7872395864. The cubic root of 55216599 is about 380.7938138037.

The spelling of 55216599 in words is "fifty-five million, two hundred sixteen thousand, five hundred ninety-nine".