555610005551 has 4 divisors (see below), whose sum is σ = 588292947072. Its totient is φ = 522927064032.

The previous prime is 555610005541. The next prime is 555610005571. The reversal of 555610005551 is 155500016555.

It is a happy number.

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 555610005551 - 2¹⁸ = 555609743407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (555610005541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16341470735 + ... + 16341470768.

It is an arithmetic number, because the mean of its divisors is an integer number (147073236768).

Almost surely, 2^555610005551 is an apocalyptic number.

555610005551 is a deficient number, since it is larger than the sum of its proper divisors (32682941521).

555610005551 is a wasteful number, since it uses less digits than its factorization.

555610005551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32682941520.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 555610005551 in words is "five hundred fifty-five billion, six hundred ten million, five thousand, five hundred fifty-one".