91281058 has 32 divisors (see below), whose sum is σ = 159703488. Its totient is φ = 38668800.

The previous prime is 91281053. The next prime is 91281077. The reversal of 91281058 is 85018219.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (91281053) by changing a digit.

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, 38878 + ... + 41158.

It is an arithmetic number, because the mean of its divisors is an integer number (4990734).

Almost surely, 2^91281058 is an apocalyptic number.

91281058 is a deficient number, since it is larger than the sum of its proper divisors (68422430).

91281058 is a wasteful number, since it uses less digits than its factorization.

91281058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 91281058 is about 9554.1120989865. The cubic root of 91281058 is about 450.2567390912.

The spelling of 91281058 in words is "ninety-one million, two hundred eighty-one thousand, fifty-eight".