91560845 has 8 divisors (see below), whose sum is σ = 110345976. Its totient is φ = 72933376.

The previous prime is 91560823. The next prime is 91560851. The reversal of 91560845 is 54806519.

It can be written as a sum of positive squares in 4 ways, for example, as 1898884 + 89661961 = 1378^2 + 9469^2 .

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 91560845 - 2¹⁰ = 91559821 is a prime.

It is a super-2 number, since 2×91560845² = 16766776674228050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91560799 and 91560808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38132 + ... + 40461.

It is an arithmetic number, because the mean of its divisors is an integer number (13793247).

Almost surely, 2^91560845 is an apocalyptic number.

It is an amenable number.

91560845 is a deficient number, since it is larger than the sum of its proper divisors (18785131).

91560845 is a wasteful number, since it uses less digits than its factorization.

91560845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78831.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 91560845 is about 9568.7431254058. The cubic root of 91560845 is about 450.7162995353.

The spelling of 91560845 in words is "ninety-one million, five hundred sixty thousand, eight hundred forty-five".