87162471 has 18 divisors (see below), whose sum is σ = 138389160. Its totient is φ = 52825080.

The previous prime is 87162461. The next prime is 87162497. The reversal of 87162471 is 17426178.

It is not a de Polignac number, because 87162471 - 2¹³ = 87154279 is a prime.

It is a super-3 number, since 3×87162471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87162461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 38931 + ... + 41108.

Almost surely, 2^87162471 is an apocalyptic number.

87162471 is a deficient number, since it is larger than the sum of its proper divisors (51226689).

87162471 is a wasteful number, since it uses less digits than its factorization.

87162471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80067 (or 80053 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 87162471 is about 9336.0843505187. The cubic root of 87162471 is about 443.3804208125.

The spelling of 87162471 in words is "eighty-seven million, one hundred sixty-two thousand, four hundred seventy-one".