88520917 has 4 divisors (see below), whose sum is σ = 88701696. Its totient is φ = 88340140.

The previous prime is 88520893. The next prime is 88520933. The reversal of 88520917 is 71902588.

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 88520917 - 2²³ = 80132309 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 88520917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88520947) 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, 89653 + ... + 90634.

It is an arithmetic number, because the mean of its divisors is an integer number (22175424).

Almost surely, 2^88520917 is an apocalyptic number.

It is an amenable number.

88520917 is a deficient number, since it is larger than the sum of its proper divisors (180779).

88520917 is a wasteful number, since it uses less digits than its factorization.

88520917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180778.

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 88520917 is about 9408.5555214390. Note that the first 4 decimals coincide. The cubic root of 88520917 is about 445.6719503783.

The spelling of 88520917 in words is "eighty-eight million, five hundred twenty thousand, nine hundred seventeen".