91017032 has 12 divisors (see below), whose sum is σ = 170707545. Its totient is φ = 45495024.

The previous prime is 91017029. The next prime is 91017041. The reversal of 91017032 is 23071019.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 54848836 + 36168196 = 7406^2 + 6014^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6746.

It is a super-2 number, since 2×91017032² = 16568200228178048, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91016989 and 91017007.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 25298 + ... + 28670.

Almost surely, 2^91017032 is an apocalyptic number.

It is an amenable number.

91017032 is a deficient number, since it is larger than the sum of its proper divisors (79690513).

91017032 is an frugal number, since it uses more digits than its factorization.

91017032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6752 (or 3375 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 91017032 is about 9540.2846917689. The cubic root of 91017032 is about 449.8222046593.

The spelling of 91017032 in words is "ninety-one million, seventeen thousand, thirty-two".