551555212142 has 8 divisors (see below), whose sum is σ = 902544892632. Its totient is φ = 250706914600.

The previous prime is 551555212133. The next prime is 551555212171. The reversal of 551555212142 is 241212555155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 551555212096 and 551555212105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12535345709 + ... + 12535345752.

It is an arithmetic number, because the mean of its divisors is an integer number (112818111579).

Almost surely, 2^551555212142 is an apocalyptic number.

551555212142 is a deficient number, since it is larger than the sum of its proper divisors (350989680490).

551555212142 is a wasteful number, since it uses less digits than its factorization.

551555212142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25070691474.

The product of its digits is 100000, while the sum is 38.

Adding to 551555212142 its reverse (241212555155), we get a palindrome (792767767297).

The spelling of 551555212142 in words is "five hundred fifty-one billion, five hundred fifty-five million, two hundred twelve thousand, one hundred forty-two".