551254222042 has 4 divisors (see below), whose sum is σ = 826881333066. Its totient is φ = 275627111020.

The previous prime is 551254222037. The next prime is 551254222063. The reversal of 551254222042 is 240222452155.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 535957232281 + 15296989761 = 732091^2 + 123681^2 .

It is a junction number, because it is equal to n+sod(n) for n = 551254221989 and 551254222007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137813555509 + ... + 137813555512.

Almost surely, 2^551254222042 is an apocalyptic number.

551254222042 is a deficient number, since it is larger than the sum of its proper divisors (275627111024).

551254222042 is a wasteful number, since it uses less digits than its factorization.

551254222042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275627111023.

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 551254222042 its reverse (240222452155), we get a palindrome (791476674197).

The spelling of 551254222042 in words is "five hundred fifty-one billion, two hundred fifty-four million, two hundred twenty-two thousand, forty-two".