1115171151 has 32 divisors (see below), whose sum is σ = 1599575040. Its totient is φ = 688579584.

The previous prime is 1115171143. The next prime is 1115171171. The reversal of 1115171151 is 1511715111.

1115171151 is a nontrivial binomial coefficient, being equal to C(47227, 2).

It is not a de Polignac number, because 1115171151 - 2³ = 1115171143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115171171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1959595 + ... + 1960163.

It is an arithmetic number, because the mean of its divisors is an integer number (49986720).

Almost surely, 2^1115171151 is an apocalyptic number.

1115171151 is the 47226-th triangular number.

1115171151 is a deficient number, since it is larger than the sum of its proper divisors (484403889).

1115171151 is a wasteful number, since it uses less digits than its factorization.

1115171151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135.

The product of its digits is 175, while the sum is 24.

The square root of 1115171151 is about 33394.1783998349. The cubic root of 1115171151 is about 1037.0041839733.

Adding to 1115171151 its reverse (1511715111), we get a palindrome (2626886262).

The spelling of 1115171151 in words is "one billion, one hundred fifteen million, one hundred seventy-one thousand, one hundred fifty-one".