655551030571 has 4 divisors (see below), whose sum is σ = 657867465592. Its totient is φ = 653234595552.

The previous prime is 655551030551. The next prime is 655551030623. The reversal of 655551030571 is 175030155556.

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

It is a cyclic number.

It is not a de Polignac number, because 655551030571 - 2⁵ = 655551030539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (655551030551) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1158217086 + ... + 1158217651.

It is an arithmetic number, because the mean of its divisors is an integer number (164466866398).

Almost surely, 2^655551030571 is an apocalyptic number.

655551030571 is a deficient number, since it is larger than the sum of its proper divisors (2316435021).

655551030571 is a wasteful number, since it uses less digits than its factorization.

655551030571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316435020.

The product of its (nonzero) digits is 393750, while the sum is 43.

The spelling of 655551030571 in words is "six hundred fifty-five billion, five hundred fifty-one million, thirty thousand, five hundred seventy-one".