55123204210 has 16 divisors (see below), whose sum is σ = 101903437656. Its totient is φ = 21453355008.

The previous prime is 55123204181. The next prime is 55123204217. The reversal of 55123204210 is 1240232155.

55123204210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46202212809 + 8920991401 = 214947^2 + 94451^2 .

It is not an unprimeable number, because it can be changed into a prime (55123204217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74490447 + ... + 74491186.

Almost surely, 2^55123204210 is an apocalyptic number.

55123204210 is a deficient number, since it is larger than the sum of its proper divisors (46780233446).

55123204210 is a wasteful number, since it uses less digits than its factorization.

55123204210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148981677.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 55123204210 its reverse (1240232155), we get a palindrome (56363436365).

The spelling of 55123204210 in words is "fifty-five billion, one hundred twenty-three million, two hundred four thousand, two hundred ten".