91022075 has 12 divisors (see below), whose sum is σ = 113733048. Its totient is φ = 72259200.

The previous prime is 91022069. The next prime is 91022083. The reversal of 91022075 is 57022019.

It is not a de Polignac number, because 91022075 - 2¹⁸ = 90759931 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 10622 + ... + 17171.

It is an arithmetic number, because the mean of its divisors is an integer number (9477754).

Almost surely, 2^91022075 is an apocalyptic number.

91022075 is a deficient number, since it is larger than the sum of its proper divisors (22710973).

91022075 is a wasteful number, since it uses less digits than its factorization.

91022075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27934 (or 27929 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 91022075 is about 9540.5489883968. The cubic root of 91022075 is about 449.8305123040.

The spelling of 91022075 in words is "ninety-one million, twenty-two thousand, seventy-five".