91755081 has 12 divisors (see below), whose sum is σ = 144583920. Its totient is φ = 55609080.

The previous prime is 91755067. The next prime is 91755091. The reversal of 91755081 is 18055719.

It is not a de Polignac number, because 91755081 - 2⁵ = 91755049 is a prime.

It is a super-2 number, since 2×91755081² = 16837989778633122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91755061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 463311 + ... + 463508.

It is an arithmetic number, because the mean of its divisors is an integer number (12048660).

Almost surely, 2^91755081 is an apocalyptic number.

It is an amenable number.

91755081 is a deficient number, since it is larger than the sum of its proper divisors (52828839).

91755081 is a wasteful number, since it uses less digits than its factorization.

91755081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926836 (or 926833 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 91755081 is about 9578.8872527032. The cubic root of 91755081 is about 451.0347890169.

The spelling of 91755081 in words is "ninety-one million, seven hundred fifty-five thousand, eighty-one".