87951 has 8 divisors (see below), whose sum is σ = 123520. Its totient is φ = 55512.

The previous prime is 87943. The next prime is 87959. The reversal of 87951 is 15978.

It is an interprime number because it is at equal distance from previous prime (87943) and next prime (87959).

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

It is not a de Polignac number, because 87951 - 2³ = 87943 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 715 + ... + 828.

It is an arithmetic number, because the mean of its divisors is an integer number (15440).

2⁸⁷⁹⁵¹ is an apocalyptic number.

87951 is a deficient number, since it is larger than the sum of its proper divisors (35569).

87951 is a wasteful number, since it uses less digits than its factorization.

87951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565.

The product of its digits is 2520, while the sum is 30.

The square root of 87951 is about 296.5653385006. The cubic root of 87951 is about 44.4713445949.

The spelling of 87951 in words is "eighty-seven thousand, nine hundred fifty-one".