87217541 has 8 divisors (see below), whose sum is σ = 91165824. Its totient is φ = 83282320.

The previous prime is 87217513. The next prime is 87217567. The reversal of 87217541 is 14571278.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87217541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87217511) 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, 11951 + ... + 17811.

It is an arithmetic number, because the mean of its divisors is an integer number (11395728).

Almost surely, 2^87217541 is an apocalyptic number.

It is an amenable number.

87217541 is a deficient number, since it is larger than the sum of its proper divisors (3948283).

87217541 is a wasteful number, since it uses less digits than its factorization.

87217541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6531.

The product of its digits is 15680, while the sum is 35.

The square root of 87217541 is about 9339.0331940731. The cubic root of 87217541 is about 443.4737783436.

The spelling of 87217541 in words is "eighty-seven million, two hundred seventeen thousand, five hundred forty-one".