55576771087 has 4 divisors (see below), whose sum is σ = 55615719096. Its totient is φ = 55537823080.

The previous prime is 55576771057. The next prime is 55576771109. The reversal of 55576771087 is 78017767555.

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 55576771087 - 2³⁵ = 21217032719 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55576771057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19471864 + ... + 19474717.

It is an arithmetic number, because the mean of its divisors is an integer number (13903929774).

Almost surely, 2^55576771087 is an apocalyptic number.

55576771087 is a deficient number, since it is larger than the sum of its proper divisors (38948009).

55576771087 is a wasteful number, since it uses less digits than its factorization.

55576771087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38948008.

The product of its (nonzero) digits is 14406000, while the sum is 58.

The spelling of 55576771087 in words is "fifty-five billion, five hundred seventy-six million, seven hundred seventy-one thousand, eighty-seven".