88505091 has 12 divisors (see below), whose sum is σ = 127963368. Its totient is φ = 58946784.

The previous prime is 88505033. The next prime is 88505099. The reversal of 88505091 is 19050588.

It is not a de Polignac number, because 88505091 - 2⁹ = 88504579 is a prime.

It is a super-2 number, since 2×88505091² = 15666302265836562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (88505099) 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 11 ways as a sum of consecutive naturals, for example, 6616 + ... + 14858.

It is an arithmetic number, because the mean of its divisors is an integer number (10663614).

Almost surely, 2^88505091 is an apocalyptic number.

88505091 is a deficient number, since it is larger than the sum of its proper divisors (39458277).

88505091 is a wasteful number, since it uses less digits than its factorization.

88505091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9442 (or 9439 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 88505091 is about 9407.7144408193. The cubic root of 88505091 is about 445.6453893315.

The spelling of 88505091 in words is "eighty-eight million, five hundred five thousand, ninety-one".