55512204 has 48 divisors (see below), whose sum is σ = 142101120. Its totient is φ = 16727040.

The previous prime is 55512187. The next prime is 55512221. The reversal of 55512204 is 40221555.

It is a happy number.

55512204 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55512187) and next prime (55512221).

55512204 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24387 + ... + 26565.

It is an arithmetic number, because the mean of its divisors is an integer number (2960440).

Almost surely, 2^55512204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55512204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71050560).

55512204 is an abundant number, since it is smaller than the sum of its proper divisors (86588916).

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

55512204 is a wasteful number, since it uses less digits than its factorization.

55512204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390 (or 2388 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 55512204 is about 7450.6512467032. The cubic root of 55512204 is about 381.4721380712.

Adding to 55512204 its reverse (40221555), we get a palindrome (95733759).

The spelling of 55512204 in words is "fifty-five million, five hundred twelve thousand, two hundred four".