55500216 has 32 divisors (see below), whose sum is σ = 146054400. Its totient is φ = 17526240.

The previous prime is 55500209. The next prime is 55500217. The reversal of 55500216 is 61200555.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55500217) 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, 60400 + ... + 61311.

It is an arithmetic number, because the mean of its divisors is an integer number (4564200).

Almost surely, 2^55500216 is an apocalyptic number.

It is an amenable number.

55500216 is an abundant number, since it is smaller than the sum of its proper divisors (90554184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55500216 is a wasteful number, since it uses less digits than its factorization.

55500216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121739 (or 121735 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 55500216 is about 7449.8467098324. The cubic root of 55500216 is about 381.4446761385. Note that the first 3 decimals are identical.

The spelling of 55500216 in words is "fifty-five million, five hundred thousand, two hundred sixteen".