8171087551 has 8 divisors (see below), whose sum is σ = 8929753344. Its totient is φ = 7415061720.

The previous prime is 8171087489. The next prime is 8171087563. The reversal of 8171087551 is 1557801718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8171087551 - 2⁹ = 8171087039 is a prime.

It is a super-2 number, since 2×8171087551² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8171087498 and 8171087507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8171087581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 653511 + ... + 665896.

It is an arithmetic number, because the mean of its divisors is an integer number (1116219168).

Almost surely, 2^8171087551 is an apocalyptic number.

8171087551 is a deficient number, since it is larger than the sum of its proper divisors (758665793).

8171087551 is a wasteful number, since it uses less digits than its factorization.

8171087551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319981.

The product of its (nonzero) digits is 78400, while the sum is 43.

The square root of 8171087551 is about 90394.0681184335. The cubic root of 8171087551 is about 2014.1568512591.

The spelling of 8171087551 in words is "eight billion, one hundred seventy-one million, eighty-seven thousand, five hundred fifty-one".