55180230 has 64 divisors (see below), whose sum is σ = 152616960. Its totient is φ = 12507264.

The previous prime is 55180211. The next prime is 55180247. The reversal of 55180230 is 3208155.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55180230.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25636 + ... + 27704.

It is an arithmetic number, because the mean of its divisors is an integer number (2384640).

Almost surely, 2^55180230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55180230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76308480).

55180230 is an abundant number, since it is smaller than the sum of its proper divisors (97436730).

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

55180230 is a wasteful number, since it uses less digits than its factorization.

55180230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 55180230 is about 7428.3396529776. The cubic root of 55180230 is about 380.7101908100.

Adding to 55180230 its reverse (3208155), we get a palindrome (58388385).

The spelling of 55180230 in words is "fifty-five million, one hundred eighty thousand, two hundred thirty".