91567145 has 16 divisors (see below), whose sum is σ = 113121792. Its totient is φ = 71111040.

The previous prime is 91567129. The next prime is 91567153. The reversal of 91567145 is 54176519.

It is not a de Polignac number, because 91567145 - 2⁴ = 91567129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91567099 and 91567108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44714 + ... + 46716.

It is an arithmetic number, because the mean of its divisors is an integer number (7070112).

Almost surely, 2^91567145 is an apocalyptic number.

It is an amenable number.

91567145 is a deficient number, since it is larger than the sum of its proper divisors (21554647).

91567145 is a wasteful number, since it uses less digits than its factorization.

91567145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272.

The product of its digits is 37800, while the sum is 38.

The square root of 91567145 is about 9569.0723165833. The cubic root of 91567145 is about 450.7266367326.

The spelling of 91567145 in words is "ninety-one million, five hundred sixty-seven thousand, one hundred forty-five".