87511297 has 8 divisors (see below), whose sum is σ = 92344320. Its totient is φ = 82764000.

The previous prime is 87511289. The next prime is 87511309. The reversal of 87511297 is 79211578.

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 87511297 - 2³ = 87511289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87511217) 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, 19329 + ... + 23422.

It is an arithmetic number, because the mean of its divisors is an integer number (11543040).

Almost surely, 2^87511297 is an apocalyptic number.

It is an amenable number.

87511297 is a deficient number, since it is larger than the sum of its proper divisors (4833023).

87511297 is a wasteful number, since it uses less digits than its factorization.

87511297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42863.

The product of its digits is 35280, while the sum is 40.

The square root of 87511297 is about 9354.7472974955. The cubic root of 87511297 is about 443.9711060520.

The spelling of 87511297 in words is "eighty-seven million, five hundred eleven thousand, two hundred ninety-seven".