87115417 has 4 divisors (see below), whose sum is σ = 87150976. Its totient is φ = 87079860.

The previous prime is 87115403. The next prime is 87115453. The reversal of 87115417 is 71451178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71451178 = 2 ⋅35725589.

It is a cyclic number.

It is not a de Polignac number, because 87115417 - 2⁷ = 87115289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87110417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13809 + ... + 19102.

It is an arithmetic number, because the mean of its divisors is an integer number (21787744).

Almost surely, 2^87115417 is an apocalyptic number.

It is an amenable number.

87115417 is a deficient number, since it is larger than the sum of its proper divisors (35559).

87115417 is a wasteful number, since it uses less digits than its factorization.

87115417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35558.

The product of its digits is 7840, while the sum is 34.

The square root of 87115417 is about 9333.5640031019. The cubic root of 87115417 is about 443.3006212633.

The spelling of 87115417 in words is "eighty-seven million, one hundred fifteen thousand, four hundred seventeen".