8100055771 has 4 divisors (see below), whose sum is σ = 8107467712. Its totient is φ = 8092643832.

The previous prime is 8100055763. The next prime is 8100055781. The reversal of 8100055771 is 1775500018.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1775500018 = 2 ⋅887750009.

It is a cyclic number.

It is not a de Polignac number, because 8100055771 - 2³ = 8100055763 is a prime.

It is a super-2 number, since 2×8100055771² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8100055721) 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, 3704331 + ... + 3706516.

It is an arithmetic number, because the mean of its divisors is an integer number (2026866928).

Almost surely, 2^8100055771 is an apocalyptic number.

8100055771 is a deficient number, since it is larger than the sum of its proper divisors (7411941).

8100055771 is a wasteful number, since it uses less digits than its factorization.

8100055771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7411940.

The product of its (nonzero) digits is 9800, while the sum is 34.

The square root of 8100055771 is about 90000.3098383556. The cubic root of 8100055771 is about 2008.3034594884.

Adding to 8100055771 its reverse (1775500018), we get a palindrome (9875555789).

The spelling of 8100055771 in words is "eight billion, one hundred million, fifty-five thousand, seven hundred seventy-one".