91486511 has 4 divisors (see below), whose sum is σ = 91749000. Its totient is φ = 91224024.

The previous prime is 91486471. The next prime is 91486523. The reversal of 91486511 is 11568419.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 91486511 - 2¹⁰ = 91485487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91486531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130721 + ... + 131418.

It is an arithmetic number, because the mean of its divisors is an integer number (22937250).

Almost surely, 2^91486511 is an apocalyptic number.

91486511 is a deficient number, since it is larger than the sum of its proper divisors (262489).

91486511 is a wasteful number, since it uses less digits than its factorization.

91486511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262488.

The product of its digits is 8640, while the sum is 35.

The square root of 91486511 is about 9564.8581275417. The cubic root of 91486511 is about 450.5942946319.

The spelling of 91486511 in words is "ninety-one million, four hundred eighty-six thousand, five hundred eleven".