87351971 has 8 divisors (see below), whose sum is σ = 100820064. Its totient is φ = 74131200.

The previous prime is 87351961. The next prime is 87351977. The reversal of 87351971 is 17915378.

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

It is a cyclic number.

It is not a de Polignac number, because 87351971 - 2²² = 83157667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87351977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61070 + ... + 62483.

It is an arithmetic number, because the mean of its divisors is an integer number (12602508).

Almost surely, 2^87351971 is an apocalyptic number.

87351971 is a deficient number, since it is larger than the sum of its proper divisors (13468093).

87351971 is a wasteful number, since it uses less digits than its factorization.

87351971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123661.

The product of its digits is 52920, while the sum is 41.

The square root of 87351971 is about 9346.2276347198. The cubic root of 87351971 is about 443.7015061468.

The spelling of 87351971 in words is "eighty-seven million, three hundred fifty-one thousand, nine hundred seventy-one".