91751061 has 8 divisors (see below), whose sum is σ = 123522880. Its totient is φ = 60573312.

The previous prime is 91751027. The next prime is 91751063. The reversal of 91751061 is 16015719.

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

It is not a de Polignac number, because 91751061 - 2¹⁴ = 91734677 is a prime.

It is a super-3 number, since 3×91751061³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91751063) 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 7 ways as a sum of consecutive naturals, for example, 148156 + ... + 148773.

It is an arithmetic number, because the mean of its divisors is an integer number (15440360).

Almost surely, 2^91751061 is an apocalyptic number.

It is an amenable number.

91751061 is a deficient number, since it is larger than the sum of its proper divisors (31771819).

91751061 is a wasteful number, since it uses less digits than its factorization.

91751061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297035.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 91751061 is about 9578.6774139231. The cubic root of 91751061 is about 451.0282019654.

The spelling of 91751061 in words is "ninety-one million, seven hundred fifty-one thousand, sixty-one".