55218010 has 8 divisors (see below), whose sum is σ = 99392436. Its totient is φ = 22087200.

The previous prime is 55217959. The next prime is 55218019. The reversal of 55218010 is 1081255.

It can be written as a sum of positive squares in 2 ways, for example, as 54302161 + 915849 = 7369^2 + 957^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55218019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2760891 + ... + 2760910.

Almost surely, 2^55218010 is an apocalyptic number.

55218010 is a deficient number, since it is larger than the sum of its proper divisors (44174426).

55218010 is a wasteful number, since it uses less digits than its factorization.

55218010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521808.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 55218010 is about 7430.8821818139. The cubic root of 55218010 is about 380.7970573664.

Adding to 55218010 its reverse (1081255), we get a palindrome (56299265).

It can be divided in two parts, 5521 and 8010, that added together give a palindrome (13531).

The spelling of 55218010 in words is "fifty-five million, two hundred eighteen thousand, ten".