91901371 has 8 divisors (see below), whose sum is σ = 97629840. Its totient is φ = 86208768.

The previous prime is 91901357. The next prime is 91901393. The reversal of 91901371 is 17310919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91901371 - 2¹¹ = 91899323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91901321) 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 7 ways as a sum of consecutive naturals, for example, 3586 + ... + 14023.

It is an arithmetic number, because the mean of its divisors is an integer number (12203730).

Almost surely, 2^91901371 is an apocalyptic number.

91901371 is a deficient number, since it is larger than the sum of its proper divisors (5728469).

91901371 is a wasteful number, since it uses less digits than its factorization.

91901371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17933.

The product of its (nonzero) digits is 1701, while the sum is 31.

The square root of 91901371 is about 9586.5202758874. The cubic root of 91901371 is about 451.2743646475.

The spelling of 91901371 in words is "ninety-one million, nine hundred one thousand, three hundred seventy-one".