8155617055 has 4 divisors (see below), whose sum is σ = 9786740472. Its totient is φ = 6524493640.

The previous prime is 8155617053. The next prime is 8155617073. The reversal of 8155617055 is 5507165518.

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

It is not a de Polignac number, because 8155617055 - 2¹ = 8155617053 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 (8155617053) 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, 815561701 + ... + 815561710.

It is an arithmetic number, because the mean of its divisors is an integer number (2446685118).

Almost surely, 2^8155617055 is an apocalyptic number.

8155617055 is a deficient number, since it is larger than the sum of its proper divisors (1631123417).

8155617055 is a wasteful number, since it uses less digits than its factorization.

8155617055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631123416.

The product of its (nonzero) digits is 210000, while the sum is 43.

The square root of 8155617055 is about 90308.4550582059. The cubic root of 8155617055 is about 2012.8848993379.

The spelling of 8155617055 in words is "eight billion, one hundred fifty-five million, six hundred seventeen thousand, fifty-five".