87533317 has 4 divisors (see below), whose sum is σ = 89395776. Its totient is φ = 85670860.

The previous prime is 87533287. The next prime is 87533333. The reversal of 87533317 is 71333578.

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.

It is a cyclic number.

It is not a de Polignac number, because 87533317 - 2¹⁹ = 87009029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87533387) 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, 931159 + ... + 931252.

It is an arithmetic number, because the mean of its divisors is an integer number (22348944).

Almost surely, 2^87533317 is an apocalyptic number.

It is an amenable number.

87533317 is a deficient number, since it is larger than the sum of its proper divisors (1862459).

87533317 is a wasteful number, since it uses less digits than its factorization.

87533317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1862458.

The product of its digits is 52920, while the sum is 37.

The square root of 87533317 is about 9355.9241660031. The cubic root of 87533317 is about 444.0083409547.

The spelling of 87533317 in words is "eighty-seven million, five hundred thirty-three thousand, three hundred seventeen".