91543145 has 8 divisors (see below), whose sum is σ = 110002560. Its totient is φ = 73134000.

The previous prime is 91543129. The next prime is 91543187. The reversal of 91543145 is 54134519.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91543145 - 2⁴ = 91543129 is a prime.

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, 8435 + ... + 15944.

It is an arithmetic number, because the mean of its divisors is an integer number (13750320).

Almost surely, 2^91543145 is an apocalyptic number.

It is an amenable number.

91543145 is a deficient number, since it is larger than the sum of its proper divisors (18459415).

91543145 is a wasteful number, since it uses less digits than its factorization.

91543145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25135.

The product of its digits is 10800, while the sum is 32.

The square root of 91543145 is about 9567.8181943430. The cubic root of 91543145 is about 450.6872543955.

The spelling of 91543145 in words is "ninety-one million, five hundred forty-three thousand, one hundred forty-five".