115156971 has 24 divisors (see below), whose sum is σ = 178074624. Its totient is φ = 74289960.

The previous prime is 115156949. The next prime is 115156973. The reversal of 115156971 is 179651511.

115156971 is a `hidden beast` number, since 11 + 515 + 69 + 71 = 666.

It is not a de Polignac number, because 115156971 - 2¹³ = 115148779 is a prime.

It is a super-3 number, since 3×115156971³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (115156973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111 + ... + 15176.

It is an arithmetic number, because the mean of its divisors is an integer number (7419776).

Almost surely, 2^115156971 is an apocalyptic number.

115156971 is a deficient number, since it is larger than the sum of its proper divisors (62917653).

115156971 is an equidigital number, since it uses as much as digits as its factorization.

115156971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15333 (or 15321 counting only the distinct ones).

The product of its digits is 9450, while the sum is 36.

The square root of 115156971 is about 10731.1216095989. The cubic root of 115156971 is about 486.5155708355.

The spelling of 115156971 in words is "one hundred fifteen million, one hundred fifty-six thousand, nine hundred seventy-one".