91450543 has 4 divisors (see below), whose sum is σ = 94604040. Its totient is φ = 88297048.

The previous prime is 91450519. The next prime is 91450547. The reversal of 91450543 is 34505419.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34505419 = 13 ⋅2654263.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91450543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91450547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1576705 + ... + 1576762.

It is an arithmetic number, because the mean of its divisors is an integer number (23651010).

Almost surely, 2^91450543 is an apocalyptic number.

91450543 is a deficient number, since it is larger than the sum of its proper divisors (3153497).

91450543 is a wasteful number, since it uses less digits than its factorization.

91450543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153496.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 91450543 is about 9562.9777266289. The cubic root of 91450543 is about 450.5352363809.

The spelling of 91450543 in words is "ninety-one million, four hundred fifty thousand, five hundred forty-three".