1771056055 has 4 divisors (see below), whose sum is σ = 2125267272. Its totient is φ = 1416844840.

The previous prime is 1771056031. The next prime is 1771056103. The reversal of 1771056055 is 5506501771.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5506501771 = 419 ⋅13142009.

It is not a de Polignac number, because 1771056055 - 2¹⁷ = 1770924983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177105601 + ... + 177105610.

It is an arithmetic number, because the mean of its divisors is an integer number (531316818).

Almost surely, 2^1771056055 is an apocalyptic number.

1771056055 is a deficient number, since it is larger than the sum of its proper divisors (354211217).

1771056055 is an equidigital number, since it uses as much as digits as its factorization.

1771056055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354211216.

The product of its (nonzero) digits is 36750, while the sum is 37.

The square root of 1771056055 is about 42083.9168210375. The cubic root of 1771056055 is about 1209.8850276661.

It can be divided in two parts, 177105605 and 5, that added together give a triangular number (177105610 = T₁₈₈₂₀).

The spelling of 1771056055 in words is "one billion, seven hundred seventy-one million, fifty-six thousand, fifty-five".