91548791 has 8 divisors (see below), whose sum is σ = 97051680. Its totient is φ = 86059008.

The previous prime is 91548781. The next prime is 91548799. The reversal of 91548791 is 19784519.

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

It is a cyclic number.

It is not a de Polignac number, because 91548791 - 2⁶ = 91548727 is a prime.

It is a super-2 number, since 2×91548791² = 16762362267123362, which contains 22 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 (91548799) 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, 13655 + ... + 19223.

It is an arithmetic number, because the mean of its divisors is an integer number (12131460).

Almost surely, 2^91548791 is an apocalyptic number.

91548791 is a deficient number, since it is larger than the sum of its proper divisors (5502889).

91548791 is a wasteful number, since it uses less digits than its factorization.

91548791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6553.

The product of its digits is 90720, while the sum is 44.

The square root of 91548791 is about 9568.1132413867. The cubic root of 91548791 is about 450.6965197094.

The spelling of 91548791 in words is "ninety-one million, five hundred forty-eight thousand, seven hundred ninety-one".