91045347 has 4 divisors (see below), whose sum is σ = 121393800. Its totient is φ = 60696896.

The previous prime is 91045333. The next prime is 91045349. The reversal of 91045347 is 74354019.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91045347 - 2¹⁰ = 91044323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91045349) 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, 15174222 + ... + 15174227.

It is an arithmetic number, because the mean of its divisors is an integer number (30348450).

Almost surely, 2^91045347 is an apocalyptic number.

91045347 is a deficient number, since it is larger than the sum of its proper divisors (30348453).

91045347 is a wasteful number, since it uses less digits than its factorization.

91045347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30348452.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 91045347 is about 9541.7685467632. The cubic root of 91045347 is about 449.8688457289.

The spelling of 91045347 in words is "ninety-one million, forty-five thousand, three hundred forty-seven".