551706225242 has 4 divisors (see below), whose sum is σ = 827559337866. Its totient is φ = 275853112620.

The previous prime is 551706225241. The next prime is 551706225251. The reversal of 551706225242 is 242522607155.

It is a happy number.

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., 542916975241 + 8789250001 = 736829^2 + 93751^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 551706225242.

It is not an unprimeable number, because it can be changed into a prime (551706225241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137926556309 + ... + 137926556312.

Almost surely, 2^551706225242 is an apocalyptic number.

551706225242 is a deficient number, since it is larger than the sum of its proper divisors (275853112624).

551706225242 is a wasteful number, since it uses less digits than its factorization.

551706225242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275853112623.

The product of its (nonzero) digits is 336000, while the sum is 41.

The spelling of 551706225242 in words is "five hundred fifty-one billion, seven hundred six million, two hundred twenty-five thousand, two hundred forty-two".