55561152210 has 64 divisors (see below), whose sum is σ = 139443213312. Its totient is φ = 14141690816.

The previous prime is 55561152203. The next prime is 55561152239. The reversal of 55561152210 is 1225116555.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236017 + ... + 408443.

It is an arithmetic number, because the mean of its divisors is an integer number (2178800208).

Almost surely, 2^55561152210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55561152210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69721606656).

55561152210 is an abundant number, since it is smaller than the sum of its proper divisors (83882061102).

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

55561152210 is a wasteful number, since it uses less digits than its factorization.

55561152210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172927.

The product of its (nonzero) digits is 15000, while the sum is 33.

Adding to 55561152210 its reverse (1225116555), we get a palindrome (56786268765).

The spelling of 55561152210 in words is "fifty-five billion, five hundred sixty-one million, one hundred fifty-two thousand, two hundred ten".