55302210 has 64 divisors (see below), whose sum is σ = 148262400. Its totient is φ = 14668416.

The previous prime is 55302187. The next prime is 55302211. The reversal of 55302210 is 1220355.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55302211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64102 + ... + 64958.

It is an arithmetic number, because the mean of its divisors is an integer number (2316600).

Almost surely, 2^55302210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55302210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74131200).

55302210 is an abundant number, since it is smaller than the sum of its proper divisors (92960190).

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

55302210 is a wasteful number, since it uses less digits than its factorization.

55302210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 55302210 is about 7436.5455690125. The cubic root of 55302210 is about 380.9905137448.

Adding to 55302210 its reverse (1220355), we get a palindrome (56522565).

The spelling of 55302210 in words is "fifty-five million, three hundred two thousand, two hundred ten".