91545 has 16 divisors (see below), whose sum is σ = 155520. Its totient is φ = 45824.

The previous prime is 91541. The next prime is 91571. The reversal of 91545 is 54519.

It is a cyclic number.

It is not a de Polignac number, because 91545 - 2² = 91541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76 + ... + 434.

It is an arithmetic number, because the mean of its divisors is an integer number (9720).

2⁹¹⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

91545 is a deficient number, since it is larger than the sum of its proper divisors (63975).

91545 is a wasteful number, since it uses less digits than its factorization.

91545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384.

The product of its digits is 900, while the sum is 24.

The square root of 91545 is about 302.5640428075. The cubic root of 91545 is about 45.0690298567.

It can be divided in two parts, 91 and 545, that added together give a palindrome (636).

The spelling of 91545 in words is "ninety-one thousand, five hundred forty-five".