551005560561 has 8 divisors (see below), whose sum is σ = 737288580384. Its totient is φ = 366029790560.

The previous prime is 551005560557. The next prime is 551005560587. The reversal of 551005560561 is 165065500155.

551005560561 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 551005560561 - 2² = 551005560557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (551005560361) 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, 326811471 + ... + 326813156.

It is an arithmetic number, because the mean of its divisors is an integer number (92161072548).

Almost surely, 2^551005560561 is an apocalyptic number.

It is an amenable number.

551005560561 is a deficient number, since it is larger than the sum of its proper divisors (186283019823).

551005560561 is a wasteful number, since it uses less digits than its factorization.

551005560561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653624911.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 551005560561 in words is "five hundred fifty-one billion, five million, five hundred sixty thousand, five hundred sixty-one".