55516321230 has 32 divisors (see below), whose sum is σ = 134532762624. Its totient is φ = 14660619936.

The previous prime is 55516321213. The next prime is 55516321249. The reversal of 55516321230 is 3212361555.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 55516321191 and 55516321200.

It is a congruent number.

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, 8980134 + ... + 8986313.

It is an arithmetic number, because the mean of its divisors is an integer number (4204148832).

Almost surely, 2^55516321230 is an apocalyptic number.

55516321230 is an abundant number, since it is smaller than the sum of its proper divisors (79016441394).

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

55516321230 is a wasteful number, since it uses less digits than its factorization.

55516321230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17966560.

The product of its (nonzero) digits is 27000, while the sum is 33.

Adding to 55516321230 its reverse (3212361555), we get a palindrome (58728682785).

The spelling of 55516321230 in words is "fifty-five billion, five hundred sixteen million, three hundred twenty-one thousand, two hundred thirty".