87391241 has 12 divisors (see below), whose sum is σ = 105412032. Its totient is φ = 70962264.

The previous prime is 87391229. The next prime is 87391253. The reversal of 87391241 is 14219378.

It is an interprime number because it is at equal distance from previous prime (87391229) and next prime (87391253).

It is not a de Polignac number, because 87391241 - 2²² = 83196937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87391741) 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 11 ways as a sum of consecutive naturals, for example, 14765 + ... + 19818.

It is an arithmetic number, because the mean of its divisors is an integer number (8784336).

Almost surely, 2^87391241 is an apocalyptic number.

It is an amenable number.

87391241 is a deficient number, since it is larger than the sum of its proper divisors (18020791).

87391241 is a wasteful number, since it uses less digits than its factorization.

87391241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34628 (or 34609 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 87391241 is about 9348.3282462695. The cubic root of 87391241 is about 443.7679864164.

The spelling of 87391241 in words is "eighty-seven million, three hundred ninety-one thousand, two hundred forty-one".