55211233442 has 16 divisors (see below), whose sum is σ = 82990528992. Its totient is φ = 27547756320.

The previous prime is 55211233351. The next prime is 55211233447. The reversal of 55211233442 is 24433211255.

It is a junction number, because it is equal to n+sod(n) for n = 55211233399 and 55211233408.

It is not an unprimeable number, because it can be changed into a prime (55211233447) 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, 4832717 + ... + 4844127.

It is an arithmetic number, because the mean of its divisors is an integer number (5186908062).

Almost surely, 2^55211233442 is an apocalyptic number.

55211233442 is a deficient number, since it is larger than the sum of its proper divisors (27779295550).

55211233442 is a wasteful number, since it uses less digits than its factorization.

55211233442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16273.

The product of its digits is 28800, while the sum is 32.

Adding to 55211233442 its reverse (24433211255), we get a palindrome (79644444697).

The spelling of 55211233442 in words is "fifty-five billion, two hundred eleven million, two hundred thirty-three thousand, four hundred forty-two".